for now stick to miui 7 !!!
i tried miui 8 but battery was draining fast and is still in develop so lots of issues.. wait till stable release- my advice..
Yes wipe: cashe/dalvik, system, data.(do NOT wipe internal storage )---> then flash MIUI 7
Do a Backup data within OS and inTWRP backup first as always.
This rom is stable version working as good as previous, flash via twrp, if coming from miui 8 do a wipe, cashe/dalvik, system, data.. Backup your data via backup and in twrp.
Poslano z mojega MI 5 z uporabo Tapatalk