so 1 of my S9's suddenly stopped showing one of the hashing boards.
i searched online, contacted Bitmain , did a dozen of re-setting , firmware changes and tens of rebooting attempts but nothing worked.
so Bitmain asked me to send the miner back, and the best settlement was me sending the BAD hashing board, yet even with that offer it didn't make sense to me as the shipping cost from my country to china is kind of expensive and i just thought it was not worth it. so i was about to give up on that hashing board until something strange happened !
I for some reason flushed the autofreq firmware and suddenly the missing hash board showed up.
this is the name of the firmware > Antminer-S9-all-201711171757-autofreq-user-Update2UBI-NF.tar.gz
can be found on bitmain website >
https://service.bitmain.com/support/download?product=Antminer%20S9now before you say it might be just my luck. i flushed back another firmware and boom ! hash board goes missing again !
still until that point i thought maybe only this particular miner that has this fix work for ! so i searched for a used S9 with a board not showing "bought it for pretty cheap" i tried the firmware and damn ! it worked again
.
I do not have any TECHNICAL or even REASONABLE explanation for this !
I just wanted to share this with you all , maybe someone find it useful.