I've just updated my Mi4c to the latest weekly rom (6.3.3) but I appear to have lost root access - using Root Checker app it tells me "root access is not properly installed on this device". I have double checked and I have enabled root access for Root Checker app in permissions in the Security app. I downloaded SuperSU and flashed via TWRP before updating as per instructions but SuperSU also now appears to have been removed from the phone during the update as it no longer shows up as an app. Everything seems to be working fine but should I install download SuperSU and flash via TWRP again? Will I just lose it again next time I update?