This is an iteration of the Mi MIX 2S MIUI 12.5 ROMs. The first MIUI 12.5 firmware or update for Mi MIX 2S has already been released on 2021-07-16 by Xiaomi. You can now download the stable, weekly, or beta MIUI 12.5 ROM for your phone/tablet with device code polaris. The last version of Mi MIX 2S MIUI 12.5 ROM has been rolled out on 2021-07-16. It is recommended to update to the latest MIUI12.5 to experience the new features. If you want to upgrade or downgrade your MIUI version, you can find more details on the Mi MIX 2S ROM section page.