How to rewrite uboot to emmc

[wpeckham]

>Is the manjaro-arm-flasher erasing the uboot installed on the emmc? How can I check that?
Probably, it is a complete image I would guess, mbr and uboot are there in 1st 16M
If/when you install bsp uboot, nothing is erased, the 1st 16M is UNCHANGED
The new uboot and idbloader (and trust - likely) are in /boot
so the usual dd commands (example simplified)
cd /boot ; su
dd if=idblo... of=/dev/whatever seek=64    (dd default bs=512B)
dd if=uboot... of=/dev/.....  bs=1M seek=8  (I do a little different, easier I think)
If trust,, bsp usually has, mainline not, mainline uboot.itb has trust within
dd if=trust...  of=/dev/....    bs=1M seek=12

Not sure about anyone else, but when I tried that it rendered my Pro unbootable.  I had to reflash the EMMC to get boot again.  After the freflash, it stilltakes a bit before the light goes green and I get boot, but at least it DOES boot.