according to https://www.raspberrypi.com/documentati ... lash-codes 8x flashes is an SDRAM issue.
It could also be "Unsupported board type". Depends on whether OP is seeing 8 short or four long followed by four short.
The first is probably not fixable. The second might be if the OP flashed an old 4B firmware and can flash a recent Pi5 one to replace it.
Statistics: Posted by thagrol — Thu Dec 18, 2025 1:10 pm