I have not done this but …
Is there anyway that if eMMC gets a bad config in the uEnv.txt or its code and bricks the board that the board can be unbricked ?
I am preparing to do a eMMC write at some point soon. I have both M3 and R2 boards.
What does the uBoot button do ? Does this have a predetermined function or is this accessible from the uEnv.txt script in anyway ?