First of all on this page download Redmi 9 (MIUI11) flash file / Firmware / stock rom ,
With this Redmi 9 (MIUI11) flash file / Firmware / stock rom you can fix stuck at Redmi or logo and bootloop, fix dead mobile, fix IMEI related issues, any type of software issue, and battery draining, removing google account , frp, and downgrade or upgrade, root, flash stock rom.
Now on this page you can find download links of various versions of firmware / stock rom / flash file for Redmi 9 (MIUI11), you will get direct download link of zip file.
Tools to Flash Redmi 9 (MIUI11) Stock rom
Redmi 9 (MIUI11) firmware download links
Note : Please back up your data before upgrading Android. If you want to downgrade your device’s software version to Android Lower Version by official software package, it may cause erase all data from your device be sure to backup your important data before Update!