This is an iteration of the Mi Max 3 MIUI 12 ROMs. The first MIUI 12 firmware or update for Mi Max 3 has already been released on 2020-04-27 by Xiaomi. You can now download the stable, weekly, or beta MIUI 12 ROM for your phone/tablet with device code nitrogen. The last version of Mi Max 3 MIUI 12 ROM has been rolled out on 2021-03-22. It is recommended to update to the latest MIUI12 to experience the new features. If you want to upgrade or downgrade your MIUI version, you can find more details on the Mi Max 3 ROM section page.