The Weekly update 20.11.11 has been officially released for Redmi K30S Ultra / Mi 10T / Mi 10T Pro (codename is apollo). Before updating, please make sure you have downloaded the exact ROM matching your Xiaomi phone/tablet. In Fastboot mode, you can check model code by typing
fastboot getvar product in cmd/shell.
Download Redmi k30s ultra (apollo) China MIUI 12 20.11.11 Recovery ROM with Android 10.0. Firmware size is 3.6 GB.