Hello, i don't know much about this firmware yet but software aren't fixes for hardware issues, try lowering clock and check input voltage. I have tons of people that ask me for gpu bios mods to fix hardware issues and it's only ever of use for stability issues caused by improper voltage.
I am asking because the L3+ thread I read says putting some firmware on a micro SD card may do the trick for them. I have the D3 only connected to the unrecognized hash board. I set it to 100mhz, lowest setting, and fans are AUTO silent. And what happens is the fans spin up to max and seem to stay there. When I plug in the other boards only everything works fine. Changed up the cables and even swapped controller boards and everything checks out. Just this one hashboard that stopped working. Thanks again for any help.
Additionally, I asked an electronics guy in town to take a look at it and he found that some parts were registering as having resistance (or not) that were counter to what he had been taught. But then checking the same parts on working boards boards they did the same thing. He said the Chinese have weird ways of doing things. He was asking for a schematic of the board but I never found that. Is this thing dead dead dead or can it be resurrected. Thanks!!!!!