try to run without su

Author: androidlover5842

app/src/main/AndroidManifest.xml

@@ -1,12 +1,20 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          xmlns:tools="http://schemas.android.com/tools"
           package="io.github.otaupdater.otaupdater">
 
     <uses-permission android:name="android.permission.INTERNET"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
+    <uses-permission
+        android:name="android.permission.REBOOT"
+        tools:ignore="ProtectedPermissions" />
+    <uses-permission android:name="android.permission.RECOVERY" />
+    <uses-permission
+        android:name="android.permission.ACCESS_CACHE_FILESYSTEM"
+        tools:ignore="ProtectedPermissions" />
 
     <application
         android:allowBackup="true"

app/src/main/java/io/github/otaupdater/otaupdater/util/Tools.java

@@ -80,7 +80,7 @@ private static String getSuBin() {
             return "/system/xbin/su";
         }
         if (RootTools.isRootAvailable()) {
-            return "su";
+            return "sh";
         }
         return "sh";
     }

installSystem.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+app_package="io.github.otaupdater.otaupdater"
+dir_app_name="OtaUpdater"
+MAIN_ACTIVITY="MainActivity"
+path_sysapp="/system/priv-app"
+apk_host="./app/build/outputs/apk/app-debug.apk"
+apk_name=$dir_app_name".apk"
+apk_target_dir="$path_sysapp/$dir_app_name"
+apk_target_sys="$apk_target_dir/$apk_name"
+
+# Delete previous APK
+#rm -f $apk_host
+
+adb shell mount -o rw,remount,rw /system 
+adb push $apk_host $apk_target_sys
+
+# Give permissions
+adb shell "chmod 755 $apk_target_dir"
+adb shell "chmod 644 $apk_target_sys"
+
+#Unmount system
+adb shell "mount -o remount,ro /"
+
+# Stop the app
+adb shell "am force-stop $app_package"
+
+# Re execute the app
+adb shell "am start -n \"$app_package/$app_package.$MAIN_ACTIVITY\" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER"