Your Redmi 9A bootloader must be unlocked.

Once you have successfully rooted your Redmi 9A, you can fully leverage its new capabilities. Here are a few essential first steps:

Tap . Once finished, a magisk_patched.img will be saved in your Downloads folder.

If you do not have a PC and your bootloader is currently locked, you will likely be unable to root the device safely, as the standard Mi Unlock procedure requires a Windows or macOS computer.

To ensure I provide the most helpful guidance for your specific device setup, please let me know: Is your Redmi 9A's ? What is your current MIUI version ?

Download the exact matching your phone's region and version numbers. (Note: Do not download a Recovery ROM; it uses a different compression scheme).

Connect the USB cable from the OTG adapter to your Fastboot-mode Redmi 9A.