diff --git a/app/src/main/java/com/droiddeck/launcher/runtime/BwrapSpawner.kt b/app/src/main/java/com/droiddeck/launcher/runtime/BwrapSpawner.kt
index d3ab2b546..e8631c1ea 100644
--- a/app/src/main/java/com/droiddeck/launcher/runtime/BwrapSpawner.kt
+++ b/app/src/main/java/com/droiddeck/launcher/runtime/BwrapSpawner.kt
@@ -75,7 +75,10 @@ object BwrapSpawner {
         }
     }
 
-    class Plan(val root: File, val binds: List<Bind>, val cwd: String, val argv: List<String>, val env: Map<String, String>)
+    class Plan(
+        val root: File, val binds: List<Bind>, val cwd: String, val argv: List<String>, val env: Map<String, String>,
+        val envTool: String = "/usr/bin/env",
+    )
 
     data class Bind(val host: String, val guest: String) {
         val spec: String get() = if (host == guest) host else "$host:$guest"
@@ -179,12 +182,13 @@ object BwrapSpawner {
         val argv = request.getJSONArray("argv").let { a -> (0 until a.length()).map { a.getString(it) } }
         val env = LinkedHashMap<String, String>()
         request.optJSONObject("env")?.let { e -> e.keys().forEach { k -> env[k] = e.getString(k) } }
-        if (binds.any { it.guest == "/dev" }) gpu(rootfs, root, env)?.forEach { addBind(it) }
+        val envTool = request.optString("envTool").takeIf { it.startsWith("/") }
+        if (envTool == null && binds.any { it.guest == "/dev" }) gpu(rootfs, root, env)?.forEach { addBind(it) }
         val libc = listOf("/usr/lib/aarch64-linux-gnu/libc.so.6", "/lib/aarch64-linux-gnu/libc.so.6").map { hostPath(binds, root.path, it) }
-        if (preloadFits(rootfs, libc.firstOrNull { File(it).isFile } ?: libc.first())) preload(session, rootfs, env).forEach { addBind(it) }
+        if (envTool == null && preloadFits(rootfs, libc.firstOrNull { File(it).isFile } ?: libc.first())) preload(session, rootfs, env).forEach { addBind(it) }
         zypakShims(binds, root, dir).forEach { addBind(it) }
         browserSandboxes(env)
-        return Plan(root, binds, request.optString("cwd", "/").ifEmpty { "/" }, argv, env)
+        return Plan(root, binds, request.optString("cwd", "/").ifEmpty { "/" }, argv, env, envTool ?: "/usr/bin/env")
     }
 
     private const val GPU_DIR = "/run/droiddeck-gpu"
@@ -325,7 +329,7 @@ object BwrapSpawner {
         val verbose = plan.env["DROIDDECK_PROOT_VERBOSE"]?.toIntOrNull()
         if (verbose != null) { cmd.add(1, "-v"); cmd.add(2, verbose.toString()) }
         plan.binds.forEach { cmd.add("-b"); cmd.add(it.spec) }
-        cmd.add("/usr/bin/env")
+        cmd.add(plan.envTool)
         cmd.add("-i")
         plan.env.forEach { (k, v) -> cmd.add("$k=$v") }
         cmd.addAll(plan.argv)
diff --git a/app/src/main/java/com/droiddeck/launcher/runtime/FlatpakManager.kt b/app/src/main/java/com/droiddeck/launcher/runtime/FlatpakManager.kt
index c3dc83da5..eabcd67b8 100644
--- a/app/src/main/java/com/droiddeck/launcher/runtime/FlatpakManager.kt
+++ b/app/src/main/java/com/droiddeck/launcher/runtime/FlatpakManager.kt
@@ -19,7 +19,7 @@ object FlatpakManager {
     @Volatile var busy: String? = null
         private set
 
-    class App(val id: String, val name: String, val icon: File?, val branch: String, val summary: String?)
+    class App(val id: String, val name: String, val icon: File?, val branch: String, val summary: String?, val arch: String = "aarch64")
 
     fun ready(context: Context): Boolean {
         val root = LinuxRuntime.rootDir(context)
@@ -33,24 +33,33 @@ object FlatpakManager {
         else -> "aarch64"
     }
 
+    internal fun arches(native: String = arch()): List<String> = if (native == "aarch64") listOf("aarch64", "x86_64") else listOf(native)
+
+    internal fun installedBranch(appDir: File, native: String = arch()): Pair<String, File>? =
+        arches(native).firstNotNullOfOrNull { arch ->
+            File(appDir, arch).listFiles()?.firstOrNull { File(it, "active").exists() }?.let { arch to it }
+        }
+
+    fun foreign(app: App, native: String = arch()): Boolean = app.arch != native
+
+    fun launchArgs(app: App, native: String = arch()): List<String> = if (foreign(app, native)) listOf("--arch=${app.arch}", app.id) else listOf(app.id)
+
     fun installedApps(context: Context): List<App> {
         val apps = File(LinuxRuntime.rootDir(context), "$USER_DIR/app")
-        val arch = arch()
         return apps.listFiles()?.mapNotNull { dir ->
             val id = dir.name
-            val archDir = File(dir, arch)
-            val branch = archDir.listFiles()?.firstOrNull { File(it, "active").exists() } ?: return@mapNotNull null
+            val (arch, branch) = installedBranch(dir) ?: return@mapNotNull null
             val active = File(branch, "active")
             val export = File(active, "export/share")
             val desktop = FileUtils.readString(File(export, "applications/$id.desktop"))
             val name = desktop?.let { entry(it, "Name") } ?: id.substringAfterLast('.')
             val summary = desktop?.let { entry(it, "Comment") }
-            App(id, name, icon(export, id), branch.name, summary)
+            App(id, name, icon(export, id), branch.name, summary, arch)
         }?.sortedBy { it.name.lowercase() } ?: emptyList()
     }
 
     fun isInstalled(context: Context, id: String): Boolean =
-        File(LinuxRuntime.rootDir(context), "$USER_DIR/app/$id/${arch()}").listFiles()?.any { File(it, "active").exists() } == true
+        installedBranch(File(LinuxRuntime.rootDir(context), "$USER_DIR/app/$id")) != null
 
     private fun entry(desktop: String, key: String): String? {
         var inMain = false
diff --git a/app/src/main/java/com/droiddeck/launcher/runtime/UserApps.kt b/app/src/main/java/com/droiddeck/launcher/runtime/UserApps.kt
index b7ca15a18..f40443e02 100644
--- a/app/src/main/java/com/droiddeck/launcher/runtime/UserApps.kt
+++ b/app/src/main/java/com/droiddeck/launcher/runtime/UserApps.kt
@@ -97,7 +97,8 @@ object UserApps {
             App(
                 "flatpak:${app.id}", Kind.FLATPAK, readName(custom) ?: app.name,
                 File(custom, "icon.png").takeIf { it.isFile } ?: app.icon ?: FlathubApi.iconUrl(app.id),
-                app.summary, FlatpakManager.LAUNCHER, listOf(app.id),
+                app.summary, FlatpakManager.LAUNCHER, FlatpakManager.launchArgs(app),
+                arch = app.arch.takeIf { FlatpakManager.foreign(app) },
             )
         }
         return (scripts + images + flatpaks).sortedBy { it.name.lowercase() }
diff --git a/app/src/main/java/com/droiddeck/launcher/ui/FrontEndContent.kt b/app/src/main/java/com/droiddeck/launcher/ui/FrontEndContent.kt
index 62c6a862e..1c4536fc0 100644
--- a/app/src/main/java/com/droiddeck/launcher/ui/FrontEndContent.kt
+++ b/app/src/main/java/com/droiddeck/launcher/ui/FrontEndContent.kt
@@ -465,7 +465,8 @@ private fun UserAppPage(app: UserApps.App, s: FrontEndState, a: FrontEndActions,
     val ctx = LocalContext.current
     val narrow = LocalNarrowPane.current
     var editing by rememberSaveable(app.key) { mutableStateOf(false) }
-    val x86 = (app.arch == "x86_64" || app.arch == "i386") && app.fex != com.droiddeck.launcher.runtime.LinuxFex.OFF
+    val x86 = (app.arch == "x86_64" || app.arch == "i386") && app.fex != com.droiddeck.launcher.runtime.LinuxFex.OFF &&
+        app.kind != UserApps.Kind.FLATPAK
     val fexReady by produceState<Boolean?>(null, app.key, x86, s.sessionRunning) {
         value = if (x86) kotlinx.coroutines.withContext(kotlinx.coroutines.Dispatchers.IO) { com.droiddeck.launcher.runtime.LinuxFex.ready(ctx) } else true
     }
diff --git a/app/src/main/res/values-ar/strings.xml b/app/src/main/res/values-ar/strings.xml
index 82a731f57..65093387c 100644
--- a/app/src/main/res/values-ar/strings.xml
+++ b/app/src/main/res/values-ar/strings.xml
@@ -1892,7 +1892,7 @@
     <string name="flatpakmgr_not_ready">أعِدّ Flatpak أولاً</string>
     <string name="flatpakmgr_starting">جارٍ البدء</string>
     <string name="flatpakmgr_exit_status">خرج Flatpak بالحالة %1$d</string>
-    <string name="flatpakmgr_wrong_arch">تم بناء %1$s لمعمارية %2$s، لكن تطبيقات Flatpak هنا يجب أن تكون لمعمارية ARM64. استخدم ملف AppImage للتطبيق بدلًا من ذلك؛ يشغّل DroidDeck ملفات AppImage لمعمارية x86 عبر FEX.</string>
+    <string name="flatpakmgr_wrong_arch">تم بناء %1$s لمعمارية %2$s، ولا يستطيع DroidDeck تشغيلها. تحتاج تطبيقات Flatpak هنا إلى إصدار لمعمارية ARM64 أو x86_64.</string>
     <string name="flatpakmgr_installing">جارٍ تثبيت %1$s</string>
     <string name="flatpakmgr_updating">جارٍ تحديث %1$s</string>
     <string name="flatpakmgr_removing">جارٍ إزالة %1$s</string>
diff --git a/app/src/main/res/values-b+es+419/strings.xml b/app/src/main/res/values-b+es+419/strings.xml
index 3a69ffa5c..eb759558a 100644
--- a/app/src/main/res/values-b+es+419/strings.xml
+++ b/app/src/main/res/values-b+es+419/strings.xml
@@ -1884,7 +1884,7 @@
     <string name="flatpakmgr_not_ready">Configura Flatpak primero</string>
     <string name="flatpakmgr_starting">Iniciando</string>
     <string name="flatpakmgr_exit_status">Flatpak terminó con el código %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s está compilado para %2$s, pero aquí las apps Flatpak deben ser para ARM64. Usa el AppImage de la app; DroidDeck ejecuta los AppImage x86 con FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s está compilado para %2$s, que DroidDeck no puede ejecutar. Aquí las apps Flatpak necesitan una versión para ARM64 o x86_64.</string>
     <string name="flatpakmgr_installing">Instalando %1$s</string>
     <string name="flatpakmgr_updating">Actualizando %1$s</string>
     <string name="flatpakmgr_removing">Quitando %1$s</string>
diff --git a/app/src/main/res/values-bg/strings.xml b/app/src/main/res/values-bg/strings.xml
index 598ce8af9..44b68fa1a 100644
--- a/app/src/main/res/values-bg/strings.xml
+++ b/app/src/main/res/values-bg/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Настрой Flatpak първо</string>
     <string name="flatpakmgr_starting">Стартиране</string>
     <string name="flatpakmgr_exit_status">Flatpak приключи със код %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s е създадено за %2$s, но приложенията Flatpak тук трябва да са за ARM64. Използвайте AppImage на приложението; DroidDeck изпълнява x86 AppImage чрез FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s е създадено за %2$s, което DroidDeck не може да изпълнява. Приложенията Flatpak тук трябва да са за ARM64 или x86_64.</string>
     <string name="flatpakmgr_installing">Инсталиране на %1$s</string>
     <string name="flatpakmgr_updating">Актуализиране на %1$s</string>
     <string name="flatpakmgr_removing">Премахване на %1$s</string>
diff --git a/app/src/main/res/values-cs/strings.xml b/app/src/main/res/values-cs/strings.xml
index 722c7640b..b3c982c97 100644
--- a/app/src/main/res/values-cs/strings.xml
+++ b/app/src/main/res/values-cs/strings.xml
@@ -1846,7 +1846,7 @@
     <string name="flatpakmgr_not_ready">Nejprve nastavte Flatpak</string>
     <string name="flatpakmgr_starting">Spouštění</string>
     <string name="flatpakmgr_exit_status">Flatpak skončil s návratovým kódem %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s je sestaveno pro %2$s, ale aplikace Flatpak zde musí být pro ARM64. Použijte AppImage aplikace; DroidDeck spouští x86 AppImage přes FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s je sestaveno pro %2$s, které DroidDeck neumí spustit. Aplikace Flatpak zde potřebují verzi pro ARM64 nebo x86_64.</string>
     <string name="flatpakmgr_installing">Instalování %1$s</string>
     <string name="flatpakmgr_updating">Aktualizování %1$s</string>
     <string name="flatpakmgr_removing">Odstraňování %1$s</string>
diff --git a/app/src/main/res/values-da/strings.xml b/app/src/main/res/values-da/strings.xml
index f6ec5613e..89e0a5cb7 100644
--- a/app/src/main/res/values-da/strings.xml
+++ b/app/src/main/res/values-da/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Opsæt Flatpak først</string>
     <string name="flatpakmgr_starting">Starter</string>
     <string name="flatpakmgr_exit_status">Flatpak afsluttede med status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s er bygget til %2$s, men Flatpak-apps her skal være bygget til ARM64. Brug appens AppImage i stedet; DroidDeck kører x86-AppImages gennem FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s er bygget til %2$s, som DroidDeck ikke kan køre. Flatpak-apps her skal være bygget til ARM64 eller x86_64.</string>
     <string name="flatpakmgr_installing">Installerer %1$s</string>
     <string name="flatpakmgr_updating">Opdaterer %1$s</string>
     <string name="flatpakmgr_removing">Fjerner %1$s</string>
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index 62c85fd4d..1c62bbf5d 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -1792,7 +1792,7 @@
     <string name="flatpakmgr_not_ready">Richte zuerst Flatpak ein</string>
     <string name="flatpakmgr_starting">Wird gestartet</string>
     <string name="flatpakmgr_exit_status">Flatpak wurde mit Status %1$d beendet</string>
-    <string name="flatpakmgr_wrong_arch">%1$s wurde für %2$s gebaut, Flatpak-Apps müssen hier aber für ARM64 gebaut sein. Nutze stattdessen das AppImage der App; DroidDeck führt x86-AppImages über FEX aus.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s wurde für %2$s gebaut, das DroidDeck nicht ausführen kann. Flatpak-Apps brauchen hier eine ARM64- oder x86_64-Version.</string>
     <string name="flatpakmgr_installing">%1$s wird installiert</string>
     <string name="flatpakmgr_updating">%1$s wird aktualisiert</string>
     <string name="flatpakmgr_removing">%1$s wird entfernt</string>
diff --git a/app/src/main/res/values-el/strings.xml b/app/src/main/res/values-el/strings.xml
index 1d831f4f3..d63807d43 100644
--- a/app/src/main/res/values-el/strings.xml
+++ b/app/src/main/res/values-el/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Ρυθμίστε πρώτα το Flatpak</string>
     <string name="flatpakmgr_starting">Γίνεται εκκίνηση</string>
     <string name="flatpakmgr_exit_status">Το Flatpak έκλεισε με κατάσταση %1$d</string>
-    <string name="flatpakmgr_wrong_arch">Το %1$s είναι φτιαγμένο για %2$s, αλλά οι εφαρμογές Flatpak εδώ πρέπει να είναι για ARM64. Χρησιμοποιήστε το AppImage της εφαρμογής· το DroidDeck εκτελεί x86 AppImage μέσω FEX.</string>
+    <string name="flatpakmgr_wrong_arch">Το %1$s είναι φτιαγμένο για %2$s, που το DroidDeck δεν μπορεί να εκτελέσει. Οι εφαρμογές Flatpak εδώ χρειάζονται έκδοση για ARM64 ή x86_64.</string>
     <string name="flatpakmgr_installing">Εγκατάσταση %1$s</string>
     <string name="flatpakmgr_updating">Ενημέρωση %1$s</string>
     <string name="flatpakmgr_removing">Κατάργηση %1$s</string>
diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 296663e35..2e64f1a38 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -1823,7 +1823,7 @@
     <string name="flatpakmgr_not_ready">Configura Flatpak primero</string>
     <string name="flatpakmgr_starting">Iniciando</string>
     <string name="flatpakmgr_exit_status">Flatpak terminó con el código %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s está compilado para %2$s, pero aquí las apps Flatpak deben ser para ARM64. Usa el AppImage de la app; DroidDeck ejecuta los AppImage x86 con FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s está compilado para %2$s, que DroidDeck no puede ejecutar. Aquí las apps Flatpak necesitan una versión para ARM64 o x86_64.</string>
     <string name="flatpakmgr_installing">Instalando %1$s</string>
     <string name="flatpakmgr_updating">Actualizando %1$s</string>
     <string name="flatpakmgr_removing">Quitando %1$s</string>
diff --git a/app/src/main/res/values-fi/strings.xml b/app/src/main/res/values-fi/strings.xml
index fa5453918..230d5141f 100644
--- a/app/src/main/res/values-fi/strings.xml
+++ b/app/src/main/res/values-fi/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Asenna Flatpak ensin</string>
     <string name="flatpakmgr_starting">Käynnistetään</string>
     <string name="flatpakmgr_exit_status">Flatpak sulkeutui tilakoodilla %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s on tehty alustalle %2$s, mutta Flatpak-sovellusten täytyy täällä olla ARM64-sovelluksia. Käytä sovelluksen AppImagea; DroidDeck ajaa x86-AppImaget FEXin kautta.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s on tehty alustalle %2$s, jota DroidDeck ei pysty ajamaan. Flatpak-sovelluksista tarvitaan täällä ARM64- tai x86_64-versio.</string>
     <string name="flatpakmgr_installing">Asennetaan %1$s</string>
     <string name="flatpakmgr_updating">Päivitetään %1$s</string>
     <string name="flatpakmgr_removing">Poistetaan %1$s</string>
diff --git a/app/src/main/res/values-fr/strings.xml b/app/src/main/res/values-fr/strings.xml
index 152be9291..674db1ada 100644
--- a/app/src/main/res/values-fr/strings.xml
+++ b/app/src/main/res/values-fr/strings.xml
@@ -1823,7 +1823,7 @@
     <string name="flatpakmgr_not_ready">Configurez d\'abord Flatpak</string>
     <string name="flatpakmgr_starting">Démarrage</string>
     <string name="flatpakmgr_exit_status">Flatpak s\'est arrêté avec le code %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s est compilée pour %2$s, mais ici les applis Flatpak doivent l\'être pour ARM64. Utilisez plutôt l\'AppImage de l\'appli ; DroidDeck exécute les AppImage x86 avec FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s est compilée pour %2$s, que DroidDeck ne peut pas exécuter. Ici, les applis Flatpak doivent exister en version ARM64 ou x86_64.</string>
     <string name="flatpakmgr_installing">Installation : %1$s</string>
     <string name="flatpakmgr_updating">Mise à jour : %1$s</string>
     <string name="flatpakmgr_removing">Suppression : %1$s</string>
diff --git a/app/src/main/res/values-hi/strings.xml b/app/src/main/res/values-hi/strings.xml
index 52cd825fe..fb5cc075c 100644
--- a/app/src/main/res/values-hi/strings.xml
+++ b/app/src/main/res/values-hi/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">पहले Flatpak सेट करें</string>
     <string name="flatpakmgr_starting">शुरू हो रहा है</string>
     <string name="flatpakmgr_exit_status">Flatpak status %1$d के साथ बंद हुआ</string>
-    <string name="flatpakmgr_wrong_arch">%1$s %2$s के लिए बना है, पर यहाँ Flatpak ऐप ARM64 के लिए बने होने चाहिए। इसके बजाय ऐप का AppImage इस्तेमाल करें; DroidDeck x86 AppImage को FEX से चलाता है।</string>
+    <string name="flatpakmgr_wrong_arch">%1$s %2$s के लिए बना है, जिसे DroidDeck नहीं चला सकता। यहाँ Flatpak ऐप ARM64 या x86_64 के लिए बने होने चाहिए।</string>
     <string name="flatpakmgr_installing">%1$s इंस्टॉल हो रहा है</string>
     <string name="flatpakmgr_updating">%1$s अपडेट हो रहा है</string>
     <string name="flatpakmgr_removing">%1$s हटाया जा रहा है</string>
diff --git a/app/src/main/res/values-hu/strings.xml b/app/src/main/res/values-hu/strings.xml
index de4841b55..8587d876d 100644
--- a/app/src/main/res/values-hu/strings.xml
+++ b/app/src/main/res/values-hu/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Előbb állítsa be a Flatpakot</string>
     <string name="flatpakmgr_starting">Indítás</string>
     <string name="flatpakmgr_exit_status">A Flatpak %1$d állapotkóddal lépett ki</string>
-    <string name="flatpakmgr_wrong_arch">A(z) %1$s %2$s rendszerre készült, de az itteni Flatpak-alkalmazásoknak ARM64-re kell készülniük. Használd inkább az alkalmazás AppImage-ét; a DroidDeck az x86 AppImage-eket FEX-en keresztül futtatja.</string>
+    <string name="flatpakmgr_wrong_arch">A(z) %1$s %2$s rendszerre készült, ezt a DroidDeck nem tudja futtatni. Az itteni Flatpak-alkalmazásoknak ARM64- vagy x86_64-változat kell.</string>
     <string name="flatpakmgr_installing">%1$s telepítése</string>
     <string name="flatpakmgr_updating">%1$s frissítése</string>
     <string name="flatpakmgr_removing">%1$s eltávolítása</string>
diff --git a/app/src/main/res/values-in/strings.xml b/app/src/main/res/values-in/strings.xml
index 2a80cb98a..058bf9b70 100644
--- a/app/src/main/res/values-in/strings.xml
+++ b/app/src/main/res/values-in/strings.xml
@@ -1777,7 +1777,7 @@
     <string name="flatpakmgr_not_ready">Siapkan Flatpak terlebih dahulu</string>
     <string name="flatpakmgr_starting">Memulai</string>
     <string name="flatpakmgr_exit_status">Flatpak keluar dengan status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s dibuat untuk %2$s, tetapi aplikasi Flatpak di sini harus dibuat untuk ARM64. Gunakan AppImage aplikasi tersebut; DroidDeck menjalankan AppImage x86 melalui FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s dibuat untuk %2$s, yang tidak dapat dijalankan DroidDeck. Aplikasi Flatpak di sini memerlukan versi ARM64 atau x86_64.</string>
     <string name="flatpakmgr_installing">Menginstal %1$s</string>
     <string name="flatpakmgr_updating">Memperbarui %1$s</string>
     <string name="flatpakmgr_removing">Menghapus %1$s</string>
diff --git a/app/src/main/res/values-it/strings.xml b/app/src/main/res/values-it/strings.xml
index a8a8742df..c76f361bf 100644
--- a/app/src/main/res/values-it/strings.xml
+++ b/app/src/main/res/values-it/strings.xml
@@ -1815,7 +1815,7 @@
     <string name="flatpakmgr_not_ready">Configura prima Flatpak</string>
     <string name="flatpakmgr_starting">Avvio</string>
     <string name="flatpakmgr_exit_status">Flatpak è terminato con stato %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s è compilata per %2$s, ma qui le app Flatpak devono essere per ARM64. Usa invece l\'AppImage dell\'app; DroidDeck esegue le AppImage x86 tramite FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s è compilata per %2$s, che DroidDeck non può eseguire. Qui le app Flatpak richiedono una versione per ARM64 o x86_64.</string>
     <string name="flatpakmgr_installing">Installazione di %1$s</string>
     <string name="flatpakmgr_updating">Aggiornamento di %1$s</string>
     <string name="flatpakmgr_removing">Rimozione di %1$s</string>
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index c559f74b7..b5034be43 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -1748,7 +1748,7 @@
     <string name="flatpakmgr_not_ready">先にFlatpakをセットアップしてください</string>
     <string name="flatpakmgr_starting">開始中</string>
     <string name="flatpakmgr_exit_status">Flatpakがステータス%1$dで終了しました</string>
-    <string name="flatpakmgr_wrong_arch">%1$s は %2$s 向けにビルドされていますが、ここでは Flatpak アプリは ARM64 向けである必要があります。代わりにアプリの AppImage を使ってください。DroidDeck は x86 の AppImage を FEX で実行します。</string>
+    <string name="flatpakmgr_wrong_arch">%1$s は DroidDeck で実行できない %2$s 向けにビルドされています。ここでは Flatpak アプリに ARM64 または x86_64 版が必要です。</string>
     <string name="flatpakmgr_installing">%1$sをインストール中</string>
     <string name="flatpakmgr_updating">%1$sを更新中</string>
     <string name="flatpakmgr_removing">%1$sを削除中</string>
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index 2fbb3c93f..a549545de 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -1777,7 +1777,7 @@
     <string name="flatpakmgr_not_ready">먼저 Flatpak을 설정하세요</string>
     <string name="flatpakmgr_starting">시작 중</string>
     <string name="flatpakmgr_exit_status">Flatpak이 종료되었습니다(상태 %1$d)</string>
-    <string name="flatpakmgr_wrong_arch">%1$s은(는) %2$s용으로 빌드되었지만 여기서는 Flatpak 앱이 ARM64용이어야 합니다. 대신 앱의 AppImage를 사용하세요. DroidDeck은 x86 AppImage를 FEX로 실행합니다.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s은(는) DroidDeck이 실행할 수 없는 %2$s용으로 빌드되었습니다. 여기서 Flatpak 앱은 ARM64 또는 x86_64 빌드여야 합니다.</string>
     <string name="flatpakmgr_installing">%1$s 설치 중</string>
     <string name="flatpakmgr_updating">%1$s 업데이트 중</string>
     <string name="flatpakmgr_removing">%1$s 제거 중</string>
diff --git a/app/src/main/res/values-ms/strings.xml b/app/src/main/res/values-ms/strings.xml
index 81909ac34..5f2aac9a1 100644
--- a/app/src/main/res/values-ms/strings.xml
+++ b/app/src/main/res/values-ms/strings.xml
@@ -1777,7 +1777,7 @@
     <string name="flatpakmgr_not_ready">Sediakan Flatpak dahulu</string>
     <string name="flatpakmgr_starting">Memulakan</string>
     <string name="flatpakmgr_exit_status">Flatpak keluar dengan status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s dibina untuk %2$s, tetapi apl Flatpak di sini mesti dibina untuk ARM64. Gunakan AppImage apl itu; DroidDeck menjalankan AppImage x86 melalui FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s dibina untuk %2$s, yang tidak dapat dijalankan oleh DroidDeck. Apl Flatpak di sini memerlukan binaan ARM64 atau x86_64.</string>
     <string name="flatpakmgr_installing">Memasang %1$s</string>
     <string name="flatpakmgr_updating">Mengemas kini %1$s</string>
     <string name="flatpakmgr_removing">Mengalih keluar %1$s</string>
diff --git a/app/src/main/res/values-nb/strings.xml b/app/src/main/res/values-nb/strings.xml
index 765cb4e48..d8c49c02b 100644
--- a/app/src/main/res/values-nb/strings.xml
+++ b/app/src/main/res/values-nb/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Sett opp Flatpak først</string>
     <string name="flatpakmgr_starting">Starter</string>
     <string name="flatpakmgr_exit_status">Flatpak avsluttet med status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s er bygget for %2$s, men Flatpak-apper her må være bygget for ARM64. Bruk appens AppImage i stedet; DroidDeck kjører x86-AppImages gjennom FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s er bygget for %2$s, som DroidDeck ikke kan kjøre. Flatpak-apper her trenger en ARM64- eller x86_64-versjon.</string>
     <string name="flatpakmgr_installing">Installerer %1$s</string>
     <string name="flatpakmgr_updating">Oppdaterer %1$s</string>
     <string name="flatpakmgr_removing">Fjerner %1$s</string>
diff --git a/app/src/main/res/values-nl/strings.xml b/app/src/main/res/values-nl/strings.xml
index 3079c44bd..9fc6f5696 100644
--- a/app/src/main/res/values-nl/strings.xml
+++ b/app/src/main/res/values-nl/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Stel eerst Flatpak in</string>
     <string name="flatpakmgr_starting">Starten</string>
     <string name="flatpakmgr_exit_status">Flatpak is gestopt met status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s is gebouwd voor %2$s, maar Flatpak-apps moeten hier voor ARM64 zijn gebouwd. Gebruik de AppImage van de app; DroidDeck draait x86-AppImages via FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s is gebouwd voor %2$s, wat DroidDeck niet kan draaien. Flatpak-apps hebben hier een ARM64- of x86_64-versie nodig.</string>
     <string name="flatpakmgr_installing">%1$s installeren</string>
     <string name="flatpakmgr_updating">%1$s updaten</string>
     <string name="flatpakmgr_removing">%1$s verwijderen</string>
diff --git a/app/src/main/res/values-pl/strings.xml b/app/src/main/res/values-pl/strings.xml
index 636b39d7f..dc4394c53 100644
--- a/app/src/main/res/values-pl/strings.xml
+++ b/app/src/main/res/values-pl/strings.xml
@@ -1846,7 +1846,7 @@
     <string name="flatpakmgr_not_ready">Najpierw skonfiguruj Flatpak</string>
     <string name="flatpakmgr_starting">Rozpoczynanie</string>
     <string name="flatpakmgr_exit_status">Flatpak zakończył działanie z kodem %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s zbudowano dla %2$s, a aplikacje Flatpak muszą tu być zbudowane dla ARM64. Użyj AppImage tej aplikacji; DroidDeck uruchamia AppImage x86 przez FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s zbudowano dla %2$s, czego DroidDeck nie potrafi uruchomić. Aplikacje Flatpak potrzebują tu wersji dla ARM64 lub x86_64.</string>
     <string name="flatpakmgr_installing">Instalowanie %1$s</string>
     <string name="flatpakmgr_updating">Aktualizowanie %1$s</string>
     <string name="flatpakmgr_removing">Usuwanie %1$s</string>
diff --git a/app/src/main/res/values-pt-rPT/strings.xml b/app/src/main/res/values-pt-rPT/strings.xml
index 33d391c62..9a2925278 100644
--- a/app/src/main/res/values-pt-rPT/strings.xml
+++ b/app/src/main/res/values-pt-rPT/strings.xml
@@ -1815,7 +1815,7 @@
     <string name="flatpakmgr_not_ready">Configure primeiro o Flatpak</string>
     <string name="flatpakmgr_starting">A iniciar</string>
     <string name="flatpakmgr_exit_status">O Flatpak terminou com o código %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s foi compilado para %2$s, mas aqui as apps Flatpak têm de ser para ARM64. Use antes o AppImage da app; o DroidDeck executa AppImages x86 através do FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s foi compilado para %2$s, que o DroidDeck não consegue executar. Aqui as apps Flatpak precisam de uma versão para ARM64 ou x86_64.</string>
     <string name="flatpakmgr_installing">A instalar %1$s</string>
     <string name="flatpakmgr_updating">A atualizar %1$s</string>
     <string name="flatpakmgr_removing">A remover %1$s</string>
diff --git a/app/src/main/res/values-pt/strings.xml b/app/src/main/res/values-pt/strings.xml
index 9507ac50d..871aad5da 100644
--- a/app/src/main/res/values-pt/strings.xml
+++ b/app/src/main/res/values-pt/strings.xml
@@ -1815,7 +1815,7 @@
     <string name="flatpakmgr_not_ready">Configure o Flatpak primeiro</string>
     <string name="flatpakmgr_starting">Iniciando</string>
     <string name="flatpakmgr_exit_status">O Flatpak terminou com o código %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s foi compilado para %2$s, mas aqui os apps Flatpak precisam ser para ARM64. Use o AppImage do app; o DroidDeck executa AppImages x86 pelo FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s foi compilado para %2$s, que o DroidDeck não consegue executar. Aqui os apps Flatpak precisam de uma versão para ARM64 ou x86_64.</string>
     <string name="flatpakmgr_installing">Instalando %1$s</string>
     <string name="flatpakmgr_updating">Atualizando %1$s</string>
     <string name="flatpakmgr_removing">Removendo %1$s</string>
diff --git a/app/src/main/res/values-ro/strings.xml b/app/src/main/res/values-ro/strings.xml
index 04ef1a701..b102e84b2 100644
--- a/app/src/main/res/values-ro/strings.xml
+++ b/app/src/main/res/values-ro/strings.xml
@@ -1823,7 +1823,7 @@
     <string name="flatpakmgr_not_ready">Configurează mai întâi Flatpak</string>
     <string name="flatpakmgr_starting">Se pornește</string>
     <string name="flatpakmgr_exit_status">Flatpak s-a închis cu starea %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s este construită pentru %2$s, dar aici aplicațiile Flatpak trebuie să fie pentru ARM64. Folosește în schimb AppImage-ul aplicației; DroidDeck rulează AppImage-urile x86 prin FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s este construită pentru %2$s, pe care DroidDeck nu o poate rula. Aici aplicațiile Flatpak au nevoie de o versiune pentru ARM64 sau x86_64.</string>
     <string name="flatpakmgr_installing">Se instalează %1$s</string>
     <string name="flatpakmgr_updating">Se actualizează %1$s</string>
     <string name="flatpakmgr_removing">Se elimină %1$s</string>
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index f1605e0af..ac5e41115 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -1846,7 +1846,7 @@
     <string name="flatpakmgr_not_ready">Сначала настройте Flatpak</string>
     <string name="flatpakmgr_starting">Запуск</string>
     <string name="flatpakmgr_exit_status">Flatpak завершился с кодом %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s собрано для %2$s, а приложения Flatpak здесь должны быть собраны для ARM64. Используйте AppImage этого приложения: DroidDeck запускает x86 AppImage через FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s собрано для %2$s, а DroidDeck не может это запустить. Приложениям Flatpak здесь нужна сборка для ARM64 или x86_64.</string>
     <string name="flatpakmgr_installing">Установка %1$s</string>
     <string name="flatpakmgr_updating">Обновление %1$s</string>
     <string name="flatpakmgr_removing">Удаление %1$s</string>
diff --git a/app/src/main/res/values-sv/strings.xml b/app/src/main/res/values-sv/strings.xml
index 4d11c867b..de4b0b872 100644
--- a/app/src/main/res/values-sv/strings.xml
+++ b/app/src/main/res/values-sv/strings.xml
@@ -1800,7 +1800,7 @@
     <string name="flatpakmgr_not_ready">Konfigurera Flatpak först</string>
     <string name="flatpakmgr_starting">Startar</string>
     <string name="flatpakmgr_exit_status">Flatpak avslutades med status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s är byggd för %2$s, men Flatpak-appar här måste vara byggda för ARM64. Använd appens AppImage i stället; DroidDeck kör x86-AppImages via FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s är byggd för %2$s, som DroidDeck inte kan köra. Flatpak-appar här behöver en ARM64- eller x86_64-version.</string>
     <string name="flatpakmgr_installing">Installerar %1$s</string>
     <string name="flatpakmgr_updating">Uppdaterar %1$s</string>
     <string name="flatpakmgr_removing">Tar bort %1$s</string>
diff --git a/app/src/main/res/values-th/strings.xml b/app/src/main/res/values-th/strings.xml
index 6e3ac5c29..62d0c590f 100644
--- a/app/src/main/res/values-th/strings.xml
+++ b/app/src/main/res/values-th/strings.xml
@@ -1777,7 +1777,7 @@
     <string name="flatpakmgr_not_ready">ตั้งค่า Flatpak ก่อน</string>
     <string name="flatpakmgr_starting">กำลังเริ่ม</string>
     <string name="flatpakmgr_exit_status">Flatpak ออกด้วยสถานะ %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s สร้างมาสำหรับ %2$s แต่แอป Flatpak ที่นี่ต้องสร้างสำหรับ ARM64 ให้ใช้ AppImage ของแอปแทน DroidDeck จะเรียกใช้ AppImage x86 ผ่าน FEX</string>
+    <string name="flatpakmgr_wrong_arch">%1$s สร้างมาสำหรับ %2$s ซึ่ง DroidDeck เรียกใช้ไม่ได้ แอป Flatpak ที่นี่ต้องเป็นเวอร์ชัน ARM64 หรือ x86_64</string>
     <string name="flatpakmgr_installing">กำลังติดตั้ง %1$s</string>
     <string name="flatpakmgr_updating">กำลังอัปเดต %1$s</string>
     <string name="flatpakmgr_removing">กำลังลบ %1$s</string>
diff --git a/app/src/main/res/values-tr/strings.xml b/app/src/main/res/values-tr/strings.xml
index a008247d7..641d59932 100644
--- a/app/src/main/res/values-tr/strings.xml
+++ b/app/src/main/res/values-tr/strings.xml
@@ -1792,7 +1792,7 @@
     <string name="flatpakmgr_not_ready">Önce Flatpak\'i kurun</string>
     <string name="flatpakmgr_starting">Başlatılıyor</string>
     <string name="flatpakmgr_exit_status">Flatpak %1$d durum koduyla çıktı</string>
-    <string name="flatpakmgr_wrong_arch">%1$s %2$s için derlenmiş, ancak buradaki Flatpak uygulamaları ARM64 için derlenmiş olmalı. Bunun yerine uygulamanın AppImage dosyasını kullanın; DroidDeck x86 AppImage dosyalarını FEX ile çalıştırır.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s, DroidDeck\'in çalıştıramadığı %2$s için derlenmiş. Buradaki Flatpak uygulamalarının ARM64 veya x86_64 sürümü olmalı.</string>
     <string name="flatpakmgr_installing">%1$s yükleniyor</string>
     <string name="flatpakmgr_updating">%1$s güncelleniyor</string>
     <string name="flatpakmgr_removing">%1$s kaldırılıyor</string>
diff --git a/app/src/main/res/values-uk/strings.xml b/app/src/main/res/values-uk/strings.xml
index a178dc4d3..f1049381c 100644
--- a/app/src/main/res/values-uk/strings.xml
+++ b/app/src/main/res/values-uk/strings.xml
@@ -1846,7 +1846,7 @@
     <string name="flatpakmgr_not_ready">Спершу налаштуйте Flatpak</string>
     <string name="flatpakmgr_starting">Запуск</string>
     <string name="flatpakmgr_exit_status">Flatpak завершився з кодом %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s зібрано для %2$s, а застосунки Flatpak тут мають бути зібрані для ARM64. Використайте AppImage цього застосунку: DroidDeck запускає x86 AppImage через FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s зібрано для %2$s, а DroidDeck не може це запустити. Застосункам Flatpak тут потрібна збірка для ARM64 або x86_64.</string>
     <string name="flatpakmgr_installing">Встановлення %1$s</string>
     <string name="flatpakmgr_updating">Оновлення %1$s</string>
     <string name="flatpakmgr_removing">Видалення %1$s</string>
diff --git a/app/src/main/res/values-vi/strings.xml b/app/src/main/res/values-vi/strings.xml
index 02c4ed55a..8df9cf14b 100644
--- a/app/src/main/res/values-vi/strings.xml
+++ b/app/src/main/res/values-vi/strings.xml
@@ -1777,7 +1777,7 @@
     <string name="flatpakmgr_not_ready">Thiết lập Flatpak trước</string>
     <string name="flatpakmgr_starting">Đang khởi động</string>
     <string name="flatpakmgr_exit_status">Flatpak đã thoát với mã %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s được dựng cho %2$s, nhưng ứng dụng Flatpak ở đây phải dựng cho ARM64. Hãy dùng bản AppImage của ứng dụng; DroidDeck chạy AppImage x86 qua FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s được dựng cho %2$s, DroidDeck không chạy được. Ứng dụng Flatpak ở đây cần bản ARM64 hoặc x86_64.</string>
     <string name="flatpakmgr_installing">Đang cài %1$s</string>
     <string name="flatpakmgr_updating">Đang cập nhật %1$s</string>
     <string name="flatpakmgr_removing">Đang gỡ %1$s</string>
diff --git a/app/src/main/res/values-zh-rCN/strings.xml b/app/src/main/res/values-zh-rCN/strings.xml
index 8cca0454f..ee1613baf 100644
--- a/app/src/main/res/values-zh-rCN/strings.xml
+++ b/app/src/main/res/values-zh-rCN/strings.xml
@@ -1825,7 +1825,7 @@
     <string name="flatpakmgr_not_ready">请先配置 Flatpak</string>
     <string name="flatpakmgr_starting">启动中</string>
     <string name="flatpakmgr_exit_status">Flatpak 已退出，状态码 %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s 是为 %2$s 构建的，但这里的 Flatpak 应用必须为 ARM64 构建。请改用该应用的 AppImage；DroidDeck 会通过 FEX 运行 x86 AppImage。</string>
+    <string name="flatpakmgr_wrong_arch">%1$s 是为 %2$s 构建的，DroidDeck 无法运行。这里的 Flatpak 应用需要 ARM64 或 x86_64 版本。</string>
     <string name="flatpakmgr_installing">正在安装 %1$s</string>
     <string name="flatpakmgr_updating">正在更新 %1$s</string>
     <string name="flatpakmgr_removing">正在移除 %1$s</string>
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 9662dab64..f76ebf2aa 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -1748,7 +1748,7 @@
     <string name="flatpakmgr_not_ready">請先設定 Flatpak</string>
     <string name="flatpakmgr_starting">正在開始</string>
     <string name="flatpakmgr_exit_status">Flatpak 已結束，狀態為 %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s 是為 %2$s 建置的，但這裡的 Flatpak 應用程式必須為 ARM64 建置。請改用該應用程式的 AppImage；DroidDeck 會透過 FEX 執行 x86 AppImage。</string>
+    <string name="flatpakmgr_wrong_arch">%1$s 是為 %2$s 建置的，DroidDeck 無法執行。這裡的 Flatpak 應用程式需要 ARM64 或 x86_64 版本。</string>
     <string name="flatpakmgr_installing">正在安裝 %1$s</string>
     <string name="flatpakmgr_updating">正在更新 %1$s</string>
     <string name="flatpakmgr_removing">正在移除 %1$s</string>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index ee7925bed..ee7521ac4 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -1748,7 +1748,7 @@
     <string name="flatpakmgr_not_ready">請先設定 Flatpak</string>
     <string name="flatpakmgr_starting">正在啟動</string>
     <string name="flatpakmgr_exit_status">Flatpak 已結束，狀態碼 %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s 是為 %2$s 建置的，但這裡的 Flatpak 應用程式必須為 ARM64 建置。請改用該應用程式的 AppImage；DroidDeck 會透過 FEX 執行 x86 AppImage。</string>
+    <string name="flatpakmgr_wrong_arch">%1$s 是為 %2$s 建置的，DroidDeck 無法執行。這裡的 Flatpak 應用程式需要 ARM64 或 x86_64 版本。</string>
     <string name="flatpakmgr_installing">正在安裝 %1$s</string>
     <string name="flatpakmgr_updating">正在更新 %1$s</string>
     <string name="flatpakmgr_removing">正在移除 %1$s</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index dd9ceabf4..e2da36712 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1904,7 +1904,7 @@
     <string name="flatpakmgr_not_ready">Set up Flatpak first</string>
     <string name="flatpakmgr_starting">Starting</string>
     <string name="flatpakmgr_exit_status">Flatpak exited with status %1$d</string>
-    <string name="flatpakmgr_wrong_arch">%1$s is built for %2$s, but Flatpak apps here must be built for ARM64. Use the app\'s AppImage instead; DroidDeck runs x86 AppImages through FEX.</string>
+    <string name="flatpakmgr_wrong_arch">%1$s is built for %2$s, which DroidDeck can\'t run. Flatpak apps here need an ARM64 or x86_64 build.</string>
     <string name="flatpakmgr_installing">Installing %1$s</string>
     <string name="flatpakmgr_updating">Updating %1$s</string>
     <string name="flatpakmgr_removing">Removing %1$s</string>
diff --git a/app/src/test/java/com/droiddeck/launcher/runtime/BwrapSpawnerTest.kt b/app/src/test/java/com/droiddeck/launcher/runtime/BwrapSpawnerTest.kt
index befb45605..a71063bf3 100644
--- a/app/src/test/java/com/droiddeck/launcher/runtime/BwrapSpawnerTest.kt
+++ b/app/src/test/java/com/droiddeck/launcher/runtime/BwrapSpawnerTest.kt
@@ -119,6 +119,27 @@ class BwrapSpawnerPlanTest {
         assertEquals("org.example.Game", plan.env["FLATPAK_ID"])
     }
 
+    @Test fun sandboxesStartThroughTheirOwnEnvByDefault() {
+        val plan = BwrapSpawner.plan(RuntimeEnvironment.getApplication(), request(op("t" to "dir", "dest" to "/tmp")), dir)
+        assertEquals("/usr/bin/env", plan.envTool)
+    }
+
+    @Test fun fexSandboxesStartThroughTheEnvTheyBringAndSkipArmPreloads() {
+        val context = RuntimeEnvironment.getApplication()
+        val rootfs = LinuxRuntime.rootDir(context)
+        val lib = File(rootfs, "usr/local/lib/libblsession.so").apply { parentFile?.mkdirs(); writeText("") }
+        val preload = File(rootfs, "etc/ld.so.preload").apply { parentFile?.mkdirs(); writeText("/usr/local/lib/libblsession.so\n") }
+        try {
+            val plan = BwrapSpawner.plan(context, request(op("t" to "dir", "dest" to "/tmp"))
+                .put("envTool", "/run/droiddeck-fex/bin/env"), dir)
+            assertEquals("/run/droiddeck-fex/bin/env", plan.envTool)
+            assertFalse(plan.env.containsKey("LD_PRELOAD"))
+            assertFalse(plan.binds.any { it.guest.startsWith("/run/droiddeck-preload") })
+        } finally {
+            listOf(lib, preload).forEach { it.delete() }
+        }
+    }
+
     @Test fun sandboxedAppsSeeTheSessionsNetworkLink() {
         val context = RuntimeEnvironment.getApplication()
         val rootfs = LinuxRuntime.rootDir(context)
diff --git a/app/src/test/java/com/droiddeck/launcher/runtime/FlatpakManagerArchTest.kt b/app/src/test/java/com/droiddeck/launcher/runtime/FlatpakManagerArchTest.kt
new file mode 100644
index 000000000..a7cd04c46
--- /dev/null
+++ b/app/src/test/java/com/droiddeck/launcher/runtime/FlatpakManagerArchTest.kt
@@ -0,0 +1,55 @@
+package com.droiddeck.launcher.runtime
+
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Before
+import org.junit.Test
+import java.io.File
+import java.nio.file.Files
+
+class FlatpakManagerArchTest {
+    private lateinit var dir: File
+
+    @Before fun setUp() {
+        dir = Files.createTempDirectory("flatpak-arch").toFile()
+    }
+
+    @After fun tearDown() {
+        dir.deleteRecursively()
+    }
+
+    private fun install(arch: String, branch: String) {
+        File(dir, "$arch/$branch/active").mkdirs()
+    }
+
+    @Test fun armDevicesAlsoListX86Builds() {
+        assertEquals(listOf("aarch64", "x86_64"), FlatpakManager.arches("aarch64"))
+        assertEquals(listOf("x86_64"), FlatpakManager.arches("x86_64"))
+    }
+
+    @Test fun anX86OnlyInstallIsFound() {
+        install("x86_64", "master")
+        val (arch, branch) = FlatpakManager.installedBranch(dir, "aarch64")!!
+        assertEquals("x86_64", arch)
+        assertEquals("master", branch.name)
+    }
+
+    @Test fun theNativeBuildWinsWhenBothAreInstalled() {
+        install("x86_64", "master")
+        install("aarch64", "stable")
+        assertEquals("aarch64", FlatpakManager.installedBranch(dir, "aarch64")!!.first)
+    }
+
+    @Test fun aBranchWithoutAnActiveDeployIsNotInstalled() {
+        File(dir, "x86_64/master").mkdirs()
+        assertNull(FlatpakManager.installedBranch(dir, "aarch64"))
+    }
+
+    @Test fun x86BuildsOnArmLaunchWithTheirArch() {
+        val x86 = FlatpakManager.App("io.github.ebkr.r2modman", "r2modman", null, "master", null, "x86_64")
+        val arm = FlatpakManager.App("org.example.App", "App", null, "stable", null, "aarch64")
+        assertEquals(listOf("--arch=x86_64", "io.github.ebkr.r2modman"), FlatpakManager.launchArgs(x86, "aarch64"))
+        assertEquals(listOf("org.example.App"), FlatpakManager.launchArgs(arm, "aarch64"))
+    }
+}
diff --git a/tools/linuxfs/overlay/usr/local/bin/droiddeck-bwrap b/tools/linuxfs/overlay/usr/local/bin/droiddeck-bwrap
index d209ae16d..59bf0baf2 100644
--- a/tools/linuxfs/overlay/usr/local/bin/droiddeck-bwrap
+++ b/tools/linuxfs/overlay/usr/local/bin/droiddeck-bwrap
@@ -6,6 +6,7 @@ import os
 import signal
 import socket
 import struct
+import subprocess
 import sys
 
 SOCKET_FILE = "/etc/droiddeck/bwrap-socket"
@@ -23,6 +24,11 @@ def socket_name():
 
 
 SOCKET = socket_name()
+FEX_DIR = "/run/droiddeck-fex"
+OWN_FEX = "/usr/local"
+X86_MACHINES = (3, 62)
+ARM_LIBS = "/usr/lib/aarch64-linux-gnu"
+ARM_LOADER = "/usr/lib/ld-linux-aarch64.so.1"
 VERSION = "bubblewrap 0.11.0 (droiddeck)"
 
 NO_ARG = {
@@ -91,6 +97,7 @@ class Spec:
         self.lock_files = []
         self.command = []
         self.argv0 = None
+        self.env_tool = None
 
 
 def parse(argv):
@@ -217,6 +224,134 @@ def host_path(s, path):
     return path
 
 
+def sandbox_link(s, path):
+    for op in reversed(s.ops):
+        if op.get("dest", "").rstrip("/") != path:
+            continue
+        if op["t"] == "symlink":
+            return op["target"]
+        if op["t"] == "bind":
+            return None
+        break
+    here = sandbox_source(s, path)
+    return os.readlink(here) if os.path.islink(here) else None
+
+
+def sandbox_source(s, path):
+    for op in reversed(s.ops):
+        if op["t"] != "bind":
+            continue
+        dest = op["dest"].rstrip("/")
+        if path == dest or path.startswith(dest + "/"):
+            return real(op["src"]).rstrip("/") + path[len(dest):]
+    return path
+
+
+def sandbox_file(s, path):
+    parts = [p for p in path.split("/") if p]
+    done = "/"
+    hops = 0
+    i = 0
+    while i < len(parts):
+        step = os.path.join(done, parts[i])
+        link = sandbox_link(s, step)
+        if link is None:
+            done = step
+            i += 1
+            continue
+        hops += 1
+        if hops > 40:
+            return None
+        base = "/" if link.startswith("/") else done
+        parts = [p for p in os.path.normpath(os.path.join(base, link)).split("/") if p] + parts[i + 1:]
+        done = "/"
+        i = 0
+    here = sandbox_source(s, done)
+    return here if os.path.isfile(here) else None
+
+
+def program_path(s, program):
+    if "/" in program:
+        return os.path.normpath(os.path.join(s.cwd or "/", program))
+    for folder in s.env.get("PATH", "/usr/bin:/bin").split(":"):
+        if not folder:
+            continue
+        candidate = os.path.normpath(os.path.join(s.cwd or "/", folder, program))
+        if sandbox_file(s, candidate):
+            return candidate
+    return None
+
+
+def machine(s, path, depth=0):
+    here = sandbox_file(s, path)
+    if here is None:
+        return None
+    try:
+        with open(here, "rb") as f:
+            head = f.read(256)
+    except OSError:
+        return None
+    if head[:4] == b"\x7fELF" and len(head) >= 20:
+        return struct.unpack("<H" if head[5] == 1 else ">H", head[18:20])[0]
+    if head[:2] == b"#!" and depth < 4:
+        words = head[2:].split(b"\n")[0].split()
+        if words:
+            return machine(s, words[0].decode("utf-8", "replace"), depth + 1)
+    return None
+
+
+def own_fex():
+    return all(os.access(os.path.join(OWN_FEX, "bin", name), os.X_OK) for name in ("FEX", "FEXServer")) \
+        and os.path.isfile(os.path.join(OWN_FEX, "lib", "libxxhash.so.0"))
+
+
+def fex_ready():
+    if own_fex():
+        return True
+    try:
+        subprocess.call([os.path.join(OWN_FEX, "bin", "droiddeck-fex-update")], stdout=sys.stderr)
+    except OSError:
+        return False
+    return own_fex()
+
+
+def start_fex_server():
+    try:
+        subprocess.Popen([os.path.join(OWN_FEX, "bin", "FEXServer"), "-p", "30"], stdin=subprocess.DEVNULL,
+                         stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, start_new_session=True)
+    except OSError as e:
+        sys.stderr.write("bwrap: could not start FEXServer: %s\n" % e)
+
+
+def through_fex(s):
+    program = program_path(s, s.command[0])
+    if program is None or machine(s, program) not in X86_MACHINES:
+        return False
+    if not fex_ready():
+        sys.stderr.write("bwrap: %s is an x86 program and FEX is not installed\n" % program)
+        return False
+    for src, dest in ((os.path.join(OWN_FEX, "bin", "FEX"), FEX_DIR + "/bin/FEX"),
+                      (os.path.join(OWN_FEX, "bin", "FEXServer"), FEX_DIR + "/bin/FEXServer"),
+                      (os.path.join(OWN_FEX, "lib", "libxxhash.so.0"), FEX_DIR + "/lib/libxxhash.so.0"),
+                      ("/usr/bin/env", FEX_DIR + "/bin/env"),
+                      (ARM_LIBS, ARM_LIBS),
+                      (real(ARM_LOADER), ARM_LOADER)):
+        s.ops.append({"t": "bind", "src": src, "dest": dest, "try": False, "ro": True})
+    data = s.env.get("XDG_CACHE_HOME") or "/tmp"
+    s.env["FEX_APP_CONFIG_LOCATION"] = FEX_DIR + "/config/"
+    s.env["FEX_APP_DATA_LOCATION"] = data + "/droiddeck-fex/"
+    s.env["FEX_APP_CACHE_LOCATION"] = data + "/droiddeck-fex/cache/"
+    for name in ("FEX_ROOTFS", "FEX_THUNKHOSTLIBS", "FEX_THUNKGUESTLIBS", "FEX_THUNKCONFIG", "FEX_PORTABLE",
+                 "GLIBC_TUNABLES", "MESA_LOADER_DRIVER_OVERRIDE", "GALLIUM_DRIVER", "VK_ICD_FILENAMES",
+                 "VK_DRIVER_FILES"):
+        s.env.pop(name, None)
+    s.command = [FEX_DIR + "/bin/FEX", program] + s.command[1:]
+    s.argv0 = None
+    s.env_tool = FEX_DIR + "/bin/env"
+    start_fex_server()
+    return True
+
+
 def hold_locks(s):
     for path in s.lock_files:
         try:
@@ -290,6 +425,8 @@ def run_by_app(s):
     if s.argv0:
         argv[0] = s.argv0
     request = {"argv": argv, "env": s.env, "cwd": s.cwd or "/", "ops": ops}
+    if s.env_tool:
+        request["envTool"] = s.env_tool
     sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
     try:
         sock.connect(SOCKET)
@@ -333,8 +470,9 @@ def main():
     hold_locks(s)
     if remaps_nothing(s):
         run_here(s)
-    else:
-        run_by_app(s)
+        return
+    through_fex(s)
+    run_by_app(s)
 
 
 if __name__ == "__main__":
diff --git a/tools/linuxfs/overlay/usr/local/bin/droiddeck-flatpak b/tools/linuxfs/overlay/usr/local/bin/droiddeck-flatpak
index 0ca582d6f..15f028fd4 100644
--- a/tools/linuxfs/overlay/usr/local/bin/droiddeck-flatpak
+++ b/tools/linuxfs/overlay/usr/local/bin/droiddeck-flatpak
@@ -109,21 +109,31 @@ def run(t, state, report_done=True):
     return 0
 
 
+def arches():
+    native = Flatpak.get_default_arch()
+    return [native, "x86_64"] if native == "aarch64" else [native]
+
+
 def install(app_id):
     inst = installation()
-    arch = Flatpak.get_default_arch()
     if app_ref(inst, app_id) is not None:
         emit(e="done", note="already installed")
         return 0
-    branch, last = None, None
-    for candidate in ("stable", "master"):
-        try:
-            branch = inst.fetch_remote_ref_sync(REMOTE, Flatpak.RefKind.APP, app_id, arch, candidate, None).get_branch()
+    arch, branch, last = None, None, None
+    for candidate_arch in arches():
+        for candidate in ("stable", "master"):
+            try:
+                branch = inst.fetch_remote_ref_sync(REMOTE, Flatpak.RefKind.APP, app_id, candidate_arch, candidate,
+                                                    None).get_branch()
+                arch = candidate_arch
+                break
+            except GLib.Error as err:
+                last = err
+        if branch is not None:
             break
-        except GLib.Error as err:
-            last = err
     if branch is None:
-        emit(e="error", message="%s is not on Flathub for %s (%s)" % (app_id, arch, last.message if last else "no branch"))
+        emit(e="error", message="%s is not on Flathub for %s (%s)" % (app_id, " or ".join(arches()),
+                                                                      last.message if last else "no branch"))
         return 1
     t, state = transaction(inst)
     t.add_install(REMOTE, "app/%s/%s/%s" % (app_id, arch, branch), None)
@@ -146,9 +156,9 @@ def install_bundle(path):
     except GLib.Error as err:
         emit(e="error", message="%s is not a Flatpak bundle (%s)" % (os.path.basename(path), err.message))
         return 1
-    if ref.get_arch() != Flatpak.get_default_arch():
+    if ref.get_arch() not in arches():
         emit(e="error", code="arch", id=app_id, arch=ref.get_arch(),
-             message="%s is built for %s, not %s" % (app_id, ref.get_arch(), Flatpak.get_default_arch()))
+             message="%s is built for %s, not %s" % (app_id, ref.get_arch(), " or ".join(arches())))
         return 1
     if app_ref(inst, app_id) is not None:
         emit(e="done", id=app_id, note="already installed")
diff --git a/tools/proot/PATCHES.md b/tools/proot/PATCHES.md
index c5924c0fe..dbf1b959b 100644
--- a/tools/proot/PATCHES.md
+++ b/tools/proot/PATCHES.md
@@ -127,6 +127,11 @@ Prototype (inert unless `PROOT_FASTPATH` is set; see `docs/development/proot-per
   IDs wrap (32768 on many Android kernels) a new child can get that ID, and PRoot aborted on the
   assertion that a new child has no state, ending the whole session. Chromium-based programs such as
   Steam's client do this. PRoot now retires the stale entry and sets the new child up from scratch.
+- `0024-execveat-absolute-path.patch` - `execveat` with an absolute path and neither `AT_EMPTY_PATH`
+  nor `AT_SYMLINK_NOFOLLOW` runs as `execve`. The kernel ignores the directory descriptor for such a
+  path, and PRoot refused the call unless the descriptor was `AT_FDCWD`. FEX starts every child of an
+  emulated program with `execveat(fd, "/proc/self/exe")`, so x86 programs in a Flatpak sandbox, which
+  does not carry the session's preloads, could not start other programs.
 
 Old kernel fixes:
 
diff --git a/tools/proot/patches/0024-execveat-absolute-path.patch b/tools/proot/patches/0024-execveat-absolute-path.patch
new file mode 100644
index 000000000..a3b7038ca
--- /dev/null
+++ b/tools/proot/patches/0024-execveat-absolute-path.patch
@@ -0,0 +1,44 @@
+From 968f450754f97907d72a756add5010f6be746b6a Mon Sep 17 00:00:00 2001
+From: maxjivi05 <maxjividen@gmail.com>
+Date: Fri, 30 Oct 2026 20:21:28 -0400
+Subject: [PATCH] syscall: run an execveat with an absolute path like execve
+
+The kernel ignores the directory descriptor of execveat when the path is
+absolute, so such a call is an execve with flags. FEX runs every child
+of an emulated program through execveat(fd, "/proc/self/exe"), which
+proot refused unless the descriptor was AT_FDCWD.
+---
+ src/syscall/enter.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/src/syscall/enter.c b/src/syscall/enter.c
+index f8ce2e7..98241bd 100644
+--- a/src/syscall/enter.c
++++ b/src/syscall/enter.c
+@@ -129,8 +129,13 @@ int translate_syscall_enter(Tracee *tracee)
+ 		status = translate_execve_enter(tracee);
+ 		break;
+ 
+-	case PR_execveat:
+-		if ((int) peek_reg(tracee, CURRENT, SYSARG_1) == AT_FDCWD) {
++	case PR_execveat: {
++		word_t flags = peek_reg(tracee, CURRENT, SYSARG_5);
++		char first = '\0';
++		bool absolute = (flags & (AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW)) == 0
++			&& read_data(tracee, &first, peek_reg(tracee, CURRENT, SYSARG_2), 1) == 0
++			&& first == '/';
++		if ((int) peek_reg(tracee, CURRENT, SYSARG_1) == AT_FDCWD || absolute) {
+ 			set_sysnum(tracee, PR_execve);
+ 			poke_reg(tracee, SYSARG_1, peek_reg(tracee, CURRENT, SYSARG_2));
+ 			poke_reg(tracee, SYSARG_2, peek_reg(tracee, CURRENT, SYSARG_3));
+@@ -142,6 +147,7 @@ int translate_syscall_enter(Tracee *tracee)
+ 		}
+ 		status = translate_execve_enter(tracee);
+ 		break;
++	}
+ 
+ 	case PR_ptrace:
+ 		status = translate_ptrace_enter(tracee);
+-- 
+2.43.0
+
diff --git a/tools/tests/test_bwrap_fex.py b/tools/tests/test_bwrap_fex.py
new file mode 100644
index 000000000..2fc646333
--- /dev/null
+++ b/tools/tests/test_bwrap_fex.py
@@ -0,0 +1,98 @@
+import os
+import runpy
+import shutil
+import struct
+import tempfile
+import unittest
+from pathlib import Path
+
+BWRAP = Path(__file__).resolve().parents[1] / "linuxfs/overlay/usr/local/bin/droiddeck-bwrap"
+
+
+def elf(path, machine):
+    path.parent.mkdir(parents=True, exist_ok=True)
+    path.write_bytes(b"\x7fELF\x02\x01\x01" + bytes(11) + struct.pack("<H", machine) + bytes(64))
+    path.chmod(0o755)
+
+
+class BwrapFexTest(unittest.TestCase):
+    def setUp(self):
+        self.dir = Path(tempfile.mkdtemp())
+        self.addCleanup(shutil.rmtree, self.dir, True)
+        self.shim = runpy.run_path(str(BWRAP))
+        self.fex = self.dir / "fex"
+        for name in ("bin/FEX", "bin/FEXServer", "lib/libxxhash.so.0"):
+            elf(self.fex / name, 183)
+        self.shim["through_fex"].__globals__["OWN_FEX"] = str(self.fex)
+        self.runtime = self.dir / "runtime"
+        self.app = self.dir / "app"
+        elf(self.runtime / "bin/ldconfig", 62)
+        elf(self.runtime / "bin/bash", 62)
+        os.symlink("bash", self.runtime / "bin/sh")
+        elf(self.runtime / "bin/arm-tool", 183)
+        (self.app / "bin").mkdir(parents=True)
+        (self.app / "bin/r2modman").write_text("#!/bin/sh\nexec /app/r2modman \"$@\"\n")
+
+    def spec(self, command, path="/app/bin:/usr/bin"):
+        s = self.shim["Spec"]()
+        s.env = {"PATH": path, "XDG_CACHE_HOME": "/home/user/.var/app/x/cache", "FEX_ROOTFS": "/sniper"}
+        s.ops = [
+            {"t": "bind", "src": str(self.runtime), "dest": "/usr", "try": False, "ro": True},
+            {"t": "bind", "src": str(self.app), "dest": "/app", "try": False, "ro": True},
+            {"t": "symlink", "target": "usr/bin", "dest": "/bin"},
+        ]
+        s.command = command
+        return s
+
+    def test_an_x86_64_program_found_on_path_runs_through_fex(self):
+        s = self.spec(["ldconfig", "-X", "-C", "/run/cache"])
+        self.assertTrue(self.shim["through_fex"](s))
+        self.assertEqual(["/run/droiddeck-fex/bin/FEX", "/usr/bin/ldconfig", "-X", "-C", "/run/cache"], s.command)
+        dests = {op["dest"]: op["src"] for op in s.ops if op["t"] == "bind"}
+        self.assertEqual(str(self.fex / "bin/FEX"), dests["/run/droiddeck-fex/bin/FEX"])
+        self.assertEqual(str(self.fex / "lib/libxxhash.so.0"), dests["/run/droiddeck-fex/lib/libxxhash.so.0"])
+        self.assertIn("/usr/lib/aarch64-linux-gnu", dests)
+        self.assertIn("/usr/lib/ld-linux-aarch64.so.1", dests)
+        self.assertNotIn("FEX_ROOTFS", s.env)
+        self.assertEqual("/home/user/.var/app/x/cache/droiddeck-fex/", s.env["FEX_APP_DATA_LOCATION"])
+
+    def test_a_script_whose_interpreter_is_x86_64_runs_through_fex(self):
+        s = self.spec(["r2modman", "--flag"])
+        self.assertTrue(self.shim["through_fex"](s))
+        self.assertEqual(["/run/droiddeck-fex/bin/FEX", "/app/bin/r2modman", "--flag"], s.command)
+
+    def test_a_program_reached_through_a_sandbox_symlink_is_checked(self):
+        s = self.spec(["/bin/sh", "-c", "true"])
+        self.assertTrue(self.shim["through_fex"](s))
+        self.assertEqual("/bin/sh", s.command[1])
+
+    def test_a_bind_whose_source_is_a_symlink_resolves_from_the_source(self):
+        real = self.dir / "store" / "tool-real"
+        elf(real, 62)
+        os.symlink("tool-real", self.dir / "store" / "tool-link")
+        s = self.spec(["/opt/tool"])
+        s.ops.append({"t": "bind", "src": str(self.dir / "store" / "tool-link"), "dest": "/opt/tool", "try": False,
+                      "ro": True})
+        self.assertTrue(self.shim["through_fex"](s))
+        self.assertEqual("/opt/tool", s.command[1])
+
+    def test_a_relative_path_entry_is_searched_from_the_working_directory(self):
+        s = self.spec(["r2modman"], path="bin")
+        s.cwd = "/app"
+        self.assertTrue(self.shim["through_fex"](s))
+        self.assertEqual("/app/bin/r2modman", s.command[1])
+
+    def test_an_arm64_program_runs_as_it_is(self):
+        s = self.spec(["arm-tool"])
+        self.assertFalse(self.shim["through_fex"](s))
+        self.assertEqual(["arm-tool"], s.command)
+        self.assertEqual(3, len(s.ops))
+
+    def test_a_missing_program_is_left_alone(self):
+        s = self.spec(["nothing-here"])
+        self.assertFalse(self.shim["through_fex"](s))
+        self.assertEqual(["nothing-here"], s.command)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/tools/tests/test_flatpak_bundle_arch.py b/tools/tests/test_flatpak_bundle_arch.py
index 8b899d9fb..b46848b70 100644
--- a/tools/tests/test_flatpak_bundle_arch.py
+++ b/tools/tests/test_flatpak_bundle_arch.py
@@ -70,13 +70,13 @@ class FlatpakBundleArchTest(unittest.TestCase):
                 rc = None
         return rc, [json.loads(line) for line in out.getvalue().splitlines()], installs
 
-    def test_a_bundle_for_another_architecture_is_refused_before_installing(self):
-        rc, events, installs = self.run_install("x86_64")
+    def test_a_bundle_for_an_architecture_fex_cannot_run_is_refused_before_installing(self):
+        rc, events, installs = self.run_install("riscv64")
         self.assertEqual(rc, 1)
         self.assertEqual(installs, [])
         self.assertEqual(events[0]["e"], "error")
         self.assertEqual(events[0]["code"], "arch")
-        self.assertEqual(events[0]["arch"], "x86_64")
+        self.assertEqual(events[0]["arch"], "riscv64")
         self.assertEqual(events[0]["id"], "io.github.ebkr.r2modman")
 
     def test_a_bundle_for_this_device_goes_on_to_install(self):
@@ -84,6 +84,53 @@ class FlatpakBundleArchTest(unittest.TestCase):
         self.assertEqual(installs, ["bundle"])
         self.assertEqual(events, [])
 
+    def test_an_x86_64_bundle_goes_on_to_install_for_fex(self):
+        rc, events, installs = self.run_install("x86_64")
+        self.assertEqual(installs, ["bundle"])
+        self.assertEqual(events, [])
+
+    def test_flathub_falls_back_to_the_x86_64_build(self):
+        module = load("aarch64", [])
+        asked = []
+
+        class Remote:
+            def __init__(self, branch):
+                self.branch = branch
+
+            def get_branch(self):
+                return self.branch
+
+        class Installation:
+            def fetch_remote_ref_sync(self, remote, kind, app_id, arch, branch, cancellable):
+                asked.append((arch, branch))
+                if arch == "x86_64" and branch == "stable":
+                    return Remote("stable")
+                raise RuntimeError("not found")
+
+        added = []
+
+        class Transaction:
+            def add_install(self, remote, ref, subpaths):
+                added.append(ref)
+
+        module.Flatpak.RefKind = types.SimpleNamespace(APP=0)
+        module.installation = lambda: Installation()
+        installed = []
+        module.app_ref = lambda inst, app_id: (installed[0] if installed else None)
+        module.transaction = lambda inst: (Transaction(), {})
+
+        def run(t, state, report_done=True):
+            installed.append(object())
+            return 0
+
+        module.run = run
+        out = io.StringIO()
+        with redirect_stdout(out):
+            rc = module.install("io.github.ebkr.r2modman")
+        self.assertEqual(rc, 0)
+        self.assertEqual(asked, [("aarch64", "stable"), ("aarch64", "master"), ("x86_64", "stable")])
+        self.assertEqual(added, ["app/io.github.ebkr.r2modman/x86_64/stable"])
+
 
 if __name__ == "__main__":
     unittest.main()