You can update TWRP 3.4.2b 2020.06.23 first.
https://xiaomi.eu/community/threads/mi-10-pro-twrp-3-4-2b-2020-06-23-from-lr-team.56577/
and then install 20.11.12 via TWRP.
Redmi K30 Pro Zoom
App force close : Playstore , Gallary , Google Maps , Video Playback
3 weeks is enough For the trial of Andriod 11, let me go back to EU Stable 12.0.8.