diff --git a/android/app/build.gradle b/android/app/build.gradle
index 2559d75..a0cc750 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -109,6 +109,7 @@ dependencies {
     implementation "dev.rikka.tools.refine:runtime:$hidden_api_version"
     implementation "dev.rikka.hidden:compat:$hidden_api_version"
     compileOnly "dev.rikka.hidden:stub:$hidden_api_version"
+    implementation "org.lsposed.hiddenapibypass:hiddenapibypass:4.3"
 
     implementation "com.github.topjohnwu.libsu:core:5.2.2"
 }
diff --git a/android/app/src/main/kotlin/dev/imranr/obtainium/MainActivity.kt b/android/app/src/main/kotlin/dev/imranr/obtainium/MainActivity.kt
index af2da43..b711892 100644
--- a/android/app/src/main/kotlin/dev/imranr/obtainium/MainActivity.kt
+++ b/android/app/src/main/kotlin/dev/imranr/obtainium/MainActivity.kt
@@ -22,6 +22,7 @@ import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.Result
 import java.io.IOException
 import java.util.concurrent.CountDownLatch
+import org.lsposed.hiddenapibypass.HiddenApiBypass
 import rikka.shizuku.Shizuku
 import rikka.shizuku.Shizuku.OnRequestPermissionResultListener
 import rikka.shizuku.ShizukuBinderWrapper
@@ -76,7 +77,8 @@ class MainActivity: FlutterActivity() {
             val params =
                 PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL)
             var installFlags: Int = PackageInstallerUtils.getInstallFlags(params)
-            installFlags = installFlags or 0x00000004  // PackageManager.INSTALL_ALLOW_TEST
+            installFlags = installFlags or (0x00000002/*PackageManager.INSTALL_REPLACE_EXISTING*/ or
+                    0x00000004 /*PackageManager.INSTALL_ALLOW_TEST*/)
             PackageInstallerUtils.setInstallFlags(params, installFlags)
             val sessionId = packageInstaller.createSession(params)
             val iSession = IPackageInstallerSession.Stub.asInterface(
@@ -136,7 +138,7 @@ class MainActivity: FlutterActivity() {
     }
 
     private fun rootInstallApk(apkFilePath: String, result: Result) {
-        Shell.sh("pm install -R -t " + apkFilePath).submit { out ->
+        Shell.sh("pm install -r -t " + apkFilePath).submit { out ->
             val builder = StringBuilder()
             for (data in out.getOut()) { builder.append(data) }
             result.success(builder.toString().endsWith("Success"))
@@ -145,6 +147,9 @@ class MainActivity: FlutterActivity() {
 
     override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
         super.configureFlutterEngine(flutterEngine)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+            HiddenApiBypass.addHiddenApiExemptions("")
+        }
         Shizuku.addRequestPermissionResultListener(shizukuRequestPermissionResultListener)
         installersChannel = MethodChannel(
             flutterEngine.dartExecutor.binaryMessenger, "installers")