probably not come by this, bitmain set very lot of miner / hashboard model,

for exemple, my S19pro 100th, in real case, is not a S19pro, so, if i try flash with S19pro firmware, give me same problem ...

in real case, is S19Jpro ... containe BHB42631 hashboard (renamed on BHB42651) ...

Biffa, please give me your kernel log for i see what is your problem, when i find i give you the link for the good firmware (from bitmain).