The current linux firmware package doesn't work with the Wifi on the MS Surface GO, and the instructions to copy the downloaded board.bin and copy over firmware-4.bin were incorrect. It actually saw the Wifi adapter after I did that and it tried scanning for wireless networks but never got any further.

Since the Killerwifi board.bin and the linux firmware board.bin were the exact same size (whereas the firmware files were orders of magnitude larger), I tried replacing board.bin instead and can report after rebooting that the Wifi now works.

So one thing I am wondering is what is the naming convention for these files? Could I just save it as board-2.bin and it work? Is there some sort of search hiearchy? 

From what I can tell it looks like udev takes care of it but I don't know enough about udev to intuit what kind of naming scheme might work without overriding the existing board file.

Thanks,

Richard