This is an iteration of the MIX 4 MIUI 14 ROMs. The first MIUI 14 firmware or update for MIX 4 has already been released on 2022-12-11 by Xiaomi. You can now download the stable, weekly, or beta MIUI 14 ROM for your phone/tablet with device code odin. The last version of MIX 4 MIUI 14 ROM has been rolled out on 2023-03-24. It is recommended to update to the latest MIUI14 to experience the new features. If you want to upgrade or downgrade your MIUI version, you can find more details on the MIX 4 ROM section page.