17 July 2026
If you're using Termux with root access, you can flash boot.img using dd.
If boot.img is in the current directory:
su -c 'dd if=boot.img of=/dev/block/by-name/boot bs=4M && sync'
Or if it's in your Downloads folder:
su -c 'dd if=/sdcard/Download/boot.img of=/dev/block/by-name/boot bs=4M && sync'
To verify the boot partition name on your device:
su -c 'ls -l /dev/block/by-name/'
To check the currently active slot on an A/B device:
su -c 'getprop ro.boot.slot_suffix'
Note: Make sure the boot.img matches your device and ROM. Flashing an incompatible boot image can prevent the device from booting.
I asked Chatgpt 😂