Flash global to stable weekly ROM Mi 9T Pro


Mar 24, 2022

I'd like to flash the Stable 12.5 (link) on my Xiaomi Mi 9T Pro phone which is currently on the MIUI 12.5.1 Stable ROM
First question: Is a data wipe / format necessary to flash the rom, or could it be done by a "dirty" upgrade?
Second: The list in the post states that for raphael phones (and thus Mi 9T Pro) the means of flashing is recovery, how exactly does flashing with recovery go?
Do I first unlock the bootloader, then install TWRP through which the ROM can be flashed?

Thanks in advance!