Hi, I discovered this application: SystemUI Tuner
Installation is a little bit more complex, you need operational ADB.
- install the application
- connect phone to the computer and run this adb commands
adb shell pm grant com.zacharee1.systemuituner android.permission.WRITE_SECURE_SETTINGS adb shell pm grant com.zacharee1.systemuituner android.permission.PACKAGE_USAGE_STATS adb shell pm grant com.zacharee1.systemuituner android.permission.DUMP
You have to restart the device after turn the high volume warning off and grant missing permissions.
