# Get root tsu dd if=/dev/block/by-name/nvdata of=/sdcard/nvdata.img dd if=/dev/block/by-name/persist of=/sdcard/persist.img dd if=/dev/block/by-name/boot of=/sdcard/boot.img
fastboot oem unlock or for A/B devices:
su -c "fastboot oem unlock" or for Pixels: unlock bootloader using termux better