This might be a dumb question.. If I am on the Mi Max 3 10.0.6.0 can I update to 10.2 without wiping anything?
Every time to touch download it tells me "You are up to date or there is a server issue. Check Xiaomi.eu for new version"
You must install from TWRP, following the 1st post. Switching from 10.0 to 10.2 - better make backup and do clean install.