(WIP) Flashing the Bootloader

echo 0 > /sys/block/mmcblk1boot0/force_ro 
dd if=u-boot-sunxi-with-spl.bin of=/dev/mmcblk1boot0
mmc bootbus set single_backward x1 x4 /dev/mmcblk1
mmc bootpart enable 1 1 /dev/mmcblk1