Open Terminal Emulator and type:
su
dd if=/sdcard/magisk_patched.img of=/dev/block/by-name/boot
reboot
(Note: The file name magisk_patched.img may vary. Check your internal storage.) root redmi 9a without pc patched
Your phone will reboot. If you see a black screen for more than 5 minutes, the patched image was incompatible – proceed to the troubleshooting section. (Note: The file name magisk_patched
The short answer: Yes, but with a massive asterisk. The short answer: Yes, but with a massive asterisk
Rooting triggers Google's SafetyNet/Play Integrity checks.
If you truly want root, borrow or use a public/library PC for one hour:
After that, you never need the PC again.