Download Fastboot ROM for Redmi 9A (e.g., dandelion_global_images_V12.5.8.0...tgz ). Extract it.
Rename the file to update.zip . Copy to root of SD card (not internal storage). Firmware REDMI 9A
Select Install update.zip from SD card → Choose file → Confirm. Download Fastboot ROM for Redmi 9A (e
Download Mi Flash Tool (latest version). Firmware REDMI 9A