I installed this new ROM with Android 11 from xiaomi.eu 12.0.3, everything was fine, but when I rebooted from recovery mode it sent me straight to fastboot mode and I could never get out of there, not even restarting the smartphone, trying to enter Recovery Mode , but nothing worked.
I had to flash the original Fastboot rom with Mi Flash to recover my mobile, now I will not try if a clean installation of Xiaomi.eu 12.1 to see if it works or better continue on xiaomi.eu 12.0.3