I just read through a topic about SK-AM62 dev board that does not boot via SD-card. I followed through the entire conversation, but do not see a solution. I have the SW1/2 switches in the same configuration as that in the user guide. Not sure why it won't boot. I used the "dd" solution in the AM62 SDK developer's manual, that did not work. So then I tried using belena etcher. No-go there either. Any other hints as to why this dev board will not boot?