sudo dd bs=1k seek=8 if=u-boot-sunxi-with-spl-opizero3-1.5gb.bin of=/dev/sdX
sudo cp sun50i-h616-orangepi-zero3-4gb.dtb /mnt/boot/dtb/allwinner/sun50i-h616-orangepi-zero3.dtb
sudo dd bs=1k seek=8 if=u-boot-sunxi-with-spl-opizero3-4gb.bin of=/dev/sdX