diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 0c19329..b4cf335 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -4,6 +4,7 @@
 
   <uses-permission android:name="android.permission.INTERNET" />
   <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
+  <uses-permission android:name="android.permission.UPDATE_PACKAGES_WITHOUT_USER_ACTION" />
   <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
   <uses-permission android:name="android.permission.DOWNLOAD_WITHOUT_NOTIFICATION" />
@@ -25,8 +26,8 @@
       android:name=".ManagerApplication"
       android:icon="@mipmap/ic_launcher"
       android:label="@string/app_name"
-      android:roundIcon="@mipmap/ic_launcher_round"
       android:requestLegacyExternalStorage="true"
+      android:roundIcon="@mipmap/ic_launcher_round"
       android:supportsRtl="true"
       tools:ignore="AllowBackup">
     <service android:name=".installer.service.InstallService" />
diff --git a/app/src/main/kotlin/com/aliucord/manager/installer/util/ManifestPatcher.kt b/app/src/main/kotlin/com/aliucord/manager/installer/util/ManifestPatcher.kt
index 4f014ab..d91fce3 100644
--- a/app/src/main/kotlin/com/aliucord/manager/installer/util/ManifestPatcher.kt
+++ b/app/src/main/kotlin/com/aliucord/manager/installer/util/ManifestPatcher.kt
@@ -6,6 +6,7 @@
 package com.aliucord.manager.installer.util
 
 import android.Manifest
+import android.os.Build
 import pxb.android.axml.*
 
 object ManifestPatcher {
@@ -67,10 +68,12 @@ object ManifestPatcher {
 
                             "uses-sdk" -> object : NodeVisitor(nv) {
                                 override fun attr(ns: String?, name: String?, resourceId: Int, type: Int, value: Any?) {
-                                    if (name != "targetSdkVersion")
+                                    if (name == "targetSdkVersion") {
+                                        val version = if (Build.VERSION.SDK_INT >= 31) 30 else 28
+                                        super.attr(ns, name, resourceId, type, version)
+                                    } else {
                                         super.attr(ns, name, resourceId, type, value)
-
-                                    super.attr(ns, name, resourceId, type, 28)
+                                    }
                                 }
                             }
 
diff --git a/app/src/main/kotlin/com/aliucord/manager/installer/util/PackageInstaller.kt b/app/src/main/kotlin/com/aliucord/manager/installer/util/PackageInstaller.kt
index 6bd2c91..c7c8a8c 100644
--- a/app/src/main/kotlin/com/aliucord/manager/installer/util/PackageInstaller.kt
+++ b/app/src/main/kotlin/com/aliucord/manager/installer/util/PackageInstaller.kt
@@ -6,18 +6,28 @@ import android.app.PendingIntent
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageInstaller
+import android.content.pm.PackageInstaller.SessionParams
+import android.content.pm.PackageManager
 import android.net.Uri
 import android.os.Build
 import com.aliucord.manager.installer.service.InstallService
+import kotlinx.coroutines.delay
 import java.io.File
 
-fun Application.installApks(vararg apks: File) =
-    packageManager.packageInstaller.installApks(this, *apks)
+fun Application.installApks(silent: Boolean = false, vararg apks: File) {
+    val packageInstaller = packageManager.packageInstaller
+    val params = SessionParams(SessionParams.MODE_FULL_INSTALL).apply {
+        if (Build.VERSION.SDK_INT >= 31) {
+            setInstallScenario(PackageManager.INSTALL_SCENARIO_FAST)
 
-fun PackageInstaller.installApks(application: Application, vararg apks: File) {
-    val params = PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL)
-    val sessionId = createSession(params)
-    val session = openSession(sessionId)
+            if (silent) {
+                setRequireUserAction(SessionParams.USER_ACTION_NOT_REQUIRED)
+            }
+        }
+    }
+
+    val sessionId = packageInstaller.createSession(params)
+    val session = packageInstaller.openSession(sessionId)
 
     apks.forEach { apk ->
         session.openWrite(apk.name, 0, apk.length()).use {
@@ -26,13 +36,13 @@ fun PackageInstaller.installApks(application: Application, vararg apks: File) {
         }
     }
 
-    val callbackIntent = Intent(application, InstallService::class.java)
+    val callbackIntent = Intent(this, InstallService::class.java)
 
     @SuppressLint("UnspecifiedImmutableFlag")
     val contentIntent = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
-        PendingIntent.getService(application, 0, callbackIntent, PendingIntent.FLAG_MUTABLE)
+        PendingIntent.getService(this, 0, callbackIntent, PendingIntent.FLAG_MUTABLE)
     } else {
-        PendingIntent.getService(application, 0, callbackIntent, 0)
+        PendingIntent.getService(this, 0, callbackIntent, 0)
     }
 
     session.commit(contentIntent.intentSender)
diff --git a/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/InstallViewModel.kt b/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/InstallViewModel.kt
index de61551..5f70d47 100644
--- a/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/InstallViewModel.kt
+++ b/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/InstallViewModel.kt
@@ -409,12 +409,29 @@ class InstallViewModel(
         }
 
         step(InstallStep.SIGN_APK) {
+            // Align resources.arsc due to targeting api 30 for silent install
+            if (Build.VERSION.SDK_INT >= 31) {
+                for (file in apks) {
+                    val bytes = ZipReader(file).use {
+                        if (it.entryNames.contains("resources.arsc")) {
+                            it.openEntry("resources.arsc")?.read()
+                        } else {
+                            null
+                        }
+                    } ?: continue
+
+                    ZipWriter(file, true).use {
+                        it.deleteEntry("resources.arsc", true)
+                        it.writeEntry("resources.arsc", bytes, ZipCompression.NONE, 4096)
+                    }
+                }
+            }
+
             apks.forEach(Signer::signApk)
         }
 
         step(InstallStep.INSTALL_APK) {
-            application.packageManager.packageInstaller
-                .installApks(application, *apks)
+            application.installApks(silent = !preferences.devMode, *apks)
         }
 
         patchedDir.deleteRecursively()
@@ -595,12 +612,27 @@ class InstallViewModel(
         }
 
         step(InstallStep.SIGN_APK) {
+            // Align resources.arsc due to targeting api 30 for silent install
+            if (Build.VERSION.SDK_INT >= 31) {
+                val bytes = ZipReader(baseApkFile).use {
+                    if (it.entryNames.contains("resources.arsc")) {
+                        it.openEntry("resources.arsc")?.read()
+                    } else {
+                        null
+                    }
+                }
+
+                ZipWriter(baseApkFile, true).use {
+                    it.deleteEntry("resources.arsc", true)
+                    it.writeEntry("resources.arsc", bytes, ZipCompression.NONE, 4096)
+                }
+            }
+
             Signer.signApk(baseApkFile)
         }
 
         step(InstallStep.INSTALL_APK) {
-            application.packageManager.packageInstaller
-                .installApks(application, baseApkFile)
+            application.installApks(silent = !preferences.devMode, baseApkFile)
         }
 
         patchedDir.deleteRecursively()
diff --git a/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/UpdaterViewModel.kt b/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/UpdaterViewModel.kt
index eeeabfd..f11800d 100644
--- a/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/UpdaterViewModel.kt
+++ b/app/src/main/kotlin/com/aliucord/manager/ui/viewmodel/UpdaterViewModel.kt
@@ -41,18 +41,14 @@ class UpdaterViewModel(
         viewModelScope.launch {
             isWorking = true
 
-            application.externalCacheDir!!.resolve("manager.apk").apply {
-                delete()
+            application.externalCacheDir!!.resolve("manager.apk").also {
+                it.delete()
 
-                downloadManager.download(url, this)
-                application.installApks(this)
-                delay(10000)
+                downloadManager.download(url, it)
+                application.installApks(silent = true, it)
 
-                showDialog = false
-                delete()
+                it.delete()
             }
-
-            isWorking = false
         }
     }