REQUIREMENTS
- Autoruns from F-Droid
- Root
- Privacy Manager/AppOpsXposed
- If you have a built-in privacy guard on your rom,disable WAKEUP and KEEP AWAKE of Google Play Services(recommended).If you don't have it, try AppOpsXposed
- Open Autostarts and grand root access.
- Search for SystemUpdateService and disable the following receivers
- SystemUpdateService$ActiveReceiver
- SystemUpdateService$Receiver
- SystemUpdateService$SecretCodeReceiver
- Now reboot the device and enter recovery
- Wipe Dalvik Cache and Reboot
- Recheck if the receivers stay disabled on reboot
If you still have the wakelock.Try this
- If you have already disabled the update services using any other tools,you'll have to re enable them before trying this.
- Now try the above fix.
- Wipe Dalvik Cache and Reboot
- Now look for the wakelock.