Thank you. I hardware flashed my backup BIOS and things worked again. Unfortunately, I still get PCI block corrupt issue when trying to flash any other BIOS.
I tried your modded 84kbit one (hardware flash with EZP2019 again) and while it runs just fine, shaders aren't unlocked. So the unlock is probably way more complicated. I'll keep my card disassembled for a bit so I can test quicker, but I think I'll just put the backup on and resell it.
I'll give the Quadro 7000 BIOS a try.
In this video, the Quadro 7000 BIOS seems to match his bios and clocks. Maybe that one needs to be modded?
According
to this post there's secret register for Fermi core enablement at 0x022588. Quadro 7000 BIOS has it recognized as a Tesla C2075, but the DVI port stops working. Additionally, it's still stuckat 448 Shaders. I'll keepit disassembled and pack it away to mess around with later.