The Stable update V12.5.4.0.RJDMIXM 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.
The firmware files posted here are all official Xiaomi MIUI or HyperOS ROM, xiaomiROM.com do not own and never modified those firmwares，you will always download the file from Xiaomi server.
You may interest in those contents: Redmi K30S Ultra / Mi 10T / Mi 10T Pro ROM Topics Xiaomi Devices Index
Download Mi 10t / 10t pro (apollo) Global MIUI 12.5 V12.5.4.0.RJDMIXM Recovery ROM with Android 11.0. Firmware size is 3.1 GB.
Download Mi 10t / 10t pro (apollo) Global MIUI 12.5 V12.5.4.0.RJDMIXM Fastboot ROM with Android 11.0. Firmware size is 5.7 GB.