Hi, in the start-up, I see that the miner this stop when he tries to increase the frequency of the cards, and therefore never starts, which seems to me odd, is that you have tried different firmware and that has not not solved the problem ...
I suggest you, I test my firmware (available in the software section), it has a different starting system, this could solve your problem, if this solves your problem then it's great, and if my firmware does not please you for X reason, you can always go back;)
just sit ...
i know its an older post but thanks for the OS!! lost one board on my T17 could not find the cause. 1 month later i changed pools and the whole thing stopped. installed you OS and bingo 10 min of auto tune and were back online both of us now