How to update from ui11 to ui12

[mogy89]

Hi
I just got my K30 pro and i find out that it has Xiaomi.eu ui11 in the updater app i check for updates and i got miui12 staple version put it ask to download it manually i did that and choosed (choose update package) the devise restart and nothing hapens just restart how to update it please?

 

[mogy89]

update the phone boot loader is unlocked but no custom boot loader the Chinese one

 

[LOLO9393]

update the phone boot loader is unlocked but no custom boot loader the Chinese one

find and install TWRP in order to flash this new update.