Download Miui 13 Redmi Note 7 ((new)) Official
Go to Settings > Developer options > Mi Unlock status and ensure your Mi account is bound to the device (required for official updates).
Boot into TWRP. Wipe Dalvik, Cache, System, Data (optional for dirty flash, but clean flash is recommended). download miui 13 redmi note 7
Wait for verification. The phone will extract the package and reboot. This takes about 10-15 minutes. Go to Settings > Developer options > Mi
Instead of chasing an unstable MIUI 13 port, consider these options: Go to Settings >