Mi5s roms 8.8.3 and 8.8.9

Apr 4, 2017
I had the same problem. Had to make a clean install to fix it... Backup your phone(just in case) download the 8.8.9 rom to the phone then go to TWRP and wipe everything except internal storage and USB otg. Then flash the new rom and wipe cache and restore everything from MI cloud. It worked for me