We had a board designed by Digi Custom Engineering. For some odd reason, they changed the pins used to interface to the ethernet and as a result, when we get SOMs with the factory default uboot on them, the we can't tftp to install our custom kernel/rootfs at EOL. I had to cobble together some lamo-serial script in conjuction with a master SD card to get our code onto the device. That was find for the first 500 piece run of devices for field trial, but won't fly for the 2-3 thousand. I need to figure out what they changed so I know what to look for in the code.
Unfortunately I can't find a schematic for the imx6ulsbc pro eval board to use as a reference. I think a comparison between that and our custom schematic would be enlightening. Is it available publicly? Any other advice for running this one down?