Last update = last Weekly update?
If yes and if you already are on 20.10.15+ version:
IMPORTANT - DON'T RUN YOUR CURRENT TWRP! Xiaomi has changed the kernel code. If you boot to TWRP after this update, your phone will turn off and there's no possibility to boot to system or recovery anymore! Only way to run TWRP is flash it and boot via fastboot! Wait for fixed TWRP releases!
The Updater try to boot to TWRP so you have to manually update your device =>
fastboot flash recovery twrp.img then
fastboot boot twrp.img and install your downloaded ROM update.