This is an iteration of the POCO C3/C31 MIUI 12 ROMs. The first MIUI 12 firmware or update for POCO C3/C31 has already been released on 2020-08-12 by Xiaomi. You can now download the stable, weekly, or beta MIUI 12 ROM for your phone/tablet with device code angelicain. The last version of POCO C3/C31 MIUI 12 ROM has been rolled out on 2023-03-17. 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 POCO C3/C31 ROM section page.