hi iI have been in the same situation i. I rooted my phone sony xperia lSony Xperia and it kept restarting and i. I reset it via the recovery menu and kinguserKinguser was still theirthere and iI finally got rid of it. doDo these steps and you will have you'reyour phone back working again:
- goGo to googleGoogle
- type in google kingorootSearch for Kingoroot
- install kingorootInstall Kingoroot for android 4.click rootAndroid
- Click "root" at the bottom 5.you're
- Your phone will reboot and kinguserKinguser is gone 6.android
- Android 4.2.2 is working again
hope it works for you