The Stable update V10.4.8.0.QFKINXM has been officially released for Redmi K20 Pro (codename is raphaelin). 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 K20 Pro ROM Topics Xiaomi Devices Index
Download Redmi k20 pro (raphaelin) India (IN) MIUI 10 V10.4.8.0.QFKINXM Recovery ROM with Android 10.0. Firmware size is 2.5 GB.