Recently, I setup NPi i.MX6ULL dev board. On the first try with new SD card, it boots up and I could login in to it.
I played with Dip switches to try other modes, then I put it back to load from SD card. Now it does not boot up. (Heartbeat LED is off)
I flashed the SD card again and was not helpful. Any advise would be appreciated.
I figured this out. You need to take out the batter, so it forgets the previous config and reads from SD card again.