Xiaomi has already stopped supporting the once-hit Poco F1 and Redmi Note 7 Pro, but through the efforts of enthusiasts, new software versions are still being released for these models. Poco F1, Redmi Note 7 Pro, Xiaomi Mi 8 and Mi Mix 2S are among the supported models of the unofficial Paranoid Android Sapphire firmware based on Android 12.
So far, only the alpha version of Paranoid Android Sapphire (Paranoid Android Sapphire Alpha 1) is available for these models, so you will have to put up with some flaws, possible software crashes and even missing functions. But in the future, of course, more stable versions of the firmware will be released.