@drewmoseley thanks a lot for very descriptive topic. Looks like a lot of manual stuff must be done to flash it (at least what I understand from first fast look). One minor thing - would be maybe possible to use picture from the internet (like this one: hhttps://www.compulab.com/wp-content/gallery/sbc-fx6/sbc-fx6.jpg) instead one which is added recently? Thanks a lot.
I would love to simplify the manual steps but I did not find anything obvious since the objective is to get the install into the onboard eMMC. If imx-usb or some other OTG mechanism will allow the build host to mount the storage as a block device over USB, I have not found instructions for it.
It might work to do something similar as they have on the WaRP7 board post
Setup to update the image (.sdimg)
From U-Boot side from mentioned post:
=> ums 0 mmc 0
From Host side:
sudo dd if=core-image-base-imx7s-warp.sdimg of=/dev/sdX bs=1M && sudo sync
Unfortunately it doesn’t look like the UBoot port has the “ums” command.