Delete system app using zip file I have rooted my Huawei P8-Lite ALE-L21 with superuser.zip. After successful root I tried to change superuser app. So, I have installed KingoUser.apk and after that I have clicked on superSu app -&gt; settings -&gt; switch superuser app. It didn't work. So, I installed Link2SD app and converted KingoUser as a system app. Now, when I launching SuperSu or KingoUser, some warning message pops up and says that the su binary needs to be updated.

There is no way to flash my phone cause Huawei haven't released my build version as a stand-alone flash file.

How can I unroot my phone now ?
Part 1 Unrooting Your Device

You can unroot your phone from SuperSu itselef

Go to SuperSu > Setting > Fullunroot.

Part 2: Replacing KingUser

You can download the ready to use script for replacing it with SuperSu Here


Download Zip file from site
Extract it in External Sdcard
Launch Terminal Emulator
Type su and give the superuser acess
Type sh /sdcard/mrw/root.sh
Script will automatically delete all Kinguser files amd will make SuperSu as system app
Update SuperSu binary