So, I paid for (.3 ETH) the modified 560 bios that minerscott posted here:
https://bitcointalk.org/index.php?topic=2024062.msg%msg_id%He assured me that it would work for my XFX single fan 560 (hynix). I repeated the same steps I've used multiple times with other cards - and his supplied bios file rendered the GPU inoperable (in both Windows and EthOS). He assured me that I just needed to try again, which I did, with the same result. It ended up being
a lot of frustration just trying to get the cards working again.
He was very nice (we've got probably 20x emails back and forth), and gave me a different bios to try, which also failed. He then went unresponsive and it has been a week since he has emailed me. I'm out the ETH and have my GPU's plodding along at roughly 12/Mh, thanks to a free bios somebody posted elsewhere. If anybody has a link to better version I'd love to have it.
I'm not going to rule out that life simply got in the way, so if you're reading this Scott, I'm happy to listen to an explanation and will take this down if you can either supply a working bios or refund my payment. This is basically my only option at this point.
Not looking for sympathy - I clearly should have invested the time into figuring this out myself. Looked for an easy way out and paid for it. Won't be paying for bios files anymore.