This is an iteration of the Redmi 9 / 9 Prime MIUI 12 ROMs. The first MIUI 12 firmware or update for Redmi 9 / 9 Prime has already been released on 2020-07-27 by Xiaomi. You can now download the stable, weekly, or beta MIUI 12 ROM for your phone/tablet with device code lancelot. The last version of Redmi 9 / 9 Prime MIUI 12 ROM has been rolled out on 2021-07-26. 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 Redmi 9 / 9 Prime ROM section page.