TWRP Reboot to TWRP. Flash boot.img to the boot slot. Reboot to system. ADB/Termux (root required) With ADB: $ adb shell push boot.img /sdcard/ $ adb shell su -c 'dd if=/sdcard/boot.img of=/dev/block/by-name/boot' $ adb shell rm -f /sdcard/boot.img $ adb reboot With ...