The Stable update V188.8.131.52.RJZMIXM has been officially released for Redmi Note 9 Pro (codename is joyeuse). 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 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 Note 9 Pro ROM Topics Xiaomi Devices Index
Download Redmi note 9 pro (joyeuse) Global MIUI 12.5 V184.108.40.206.RJZMIXM Recovery ROM with Android 11.0. Firmware size is 2.7 GB.
Download Redmi note 9 pro (joyeuse) Global MIUI 12.5 V220.127.116.11.RJZMIXM Fastboot ROM with Android 11.0. Firmware size is 4.9 GB.