Radxa Rock 5B: reboot, what's the reason?

I still don’t know, I opened another topic to get advices since the beginning in this new adventure. I thought it was not good to continue here, since it is a brand new board and I hope a brand new story I want to start with maximum caution. Even if the previous one was a defective one, I don’t want to make any mistake.

New topic is this: Replaced radxa 5b: little by little