That is great news, half the problem is already solved.

did you manage to back up the whole firmware in a flush-able format where others can flash it on their T17/S17 boards to test it? if not then could you please seek some help from thierry4wd , taserz or any other firmware savvy?
Compiling bmminer is not the hard part making a flashable firmware version that doesn't shit the bed is more a bitch than anything else.
I have done compiling custom bmminer binary, that's about it. So if anyone wants to give me tips on making a flashable version of firmware that would be great. But I don't see how it would help if all stock S17/T17 miners only accept signed firmware files anyway.
if you are not willing to do that, I might just buy the control board from you and have it sent to however is willing to extract and test the firmware.
I already am selling the control boards on ebay (factory new condition) and pre-flashing the firmware for my buyers, if you're serious about buying one, it would be no extra cost and I'll just leave the MP test firmware on there.