I have checked the log, but when the miner quits working, I can't access it to get the log to see WHY it quit working. The ip address for the miner just times out and I have manually reset the miner. I have tried several times to flash the new FW with no luck. Is this a common problem? How long does a typical flash take?

I'm in the same boat. New S9, no hardware version, ect. I was able to get it to hash for a while, but then it would quit hashing and I couldn't log into it. I read that someone was able to run 2 of the 3 hash boards so I tried it and it seemed to work for a few hours, then it would quit hashing again. I reset it and finally it is working, but still only on 2 hash boards. I tried to upload new firmware and was unable to get any of them to work. I downloaded FW from bitmain, but it would just say: uploaded 0% until it timed out and then became unresponsive. I'd love to get this thing running the way it should.