I bought a board from amazon and it came last night. When I plugged it in I got this message.
There is a few of us with this issue, but sadly Libre Computer seem to be very quiet on a solution
I had the same issue - followed the official update instructions and it’s bricked, will not respond at all even using the recommended recovery steps.
I think the only solution is buying a new board from a different company and warning others not to buy from Libre Computer.