Mac Pro 2010-No Chime Black Screen after Mojave update

[aortega08]

I recently tried upgrading my Mac Pro 2010 to Mojave. I have the Nvidia KQuadro5000 graphics card.
I held the power button to try to update the firmware and it seemed to fail and I could never get it back up and boot into Mac OS High Sierra. At one point it was chiming with white screen then I tried resetting the nvram and now I get no chime with black screen. I tried using a restore firmware cd with 1.9 and it just rejects the disk. I am out of ideas on how to fix my now dead mac pro. I would appreciate any help. Thank you.

 

[tsialex]

You could:

1. Replace the backplane, you can buy one used MP5,1 backplane on eBay for around $60 to $70 plus shipping.
2. Buy a Matt card www.cmizapper.com and use it as your SPI flash/BootROM. You will need to reconstruct the Mac Pro hardwareIDs to log in iCloud/iMessage/FaceTime since Matt cards are clones.
3. Desolder the SPI flash, reprogram it with 144.0.0.0.0 then solder it back. You will need to reconstruct the Mac Pro hardwareIDs to login iCloud/iMessage/FaceTime as the generic 144.0.0.0.0 don’t have any hardwareIDs.

 

[aortega08]

You could:

1. Replace the backplane, you can buy one used MP5,1 backplane on eBay for around $60 to $70 plus shipping.
2. Buy a Matt card www.cmizapper.com and use it as your SPI flash/BootROM. You will need to reconstruct the Mac Pro hardwareIDs to log in iCloud/iMessage/FaceTime since Matt cards are clones.
3. Desolder the SPI flash, reprogram it with 144.0.0.0.0 then solder it back. You will need to reconstruct the Mac Pro hardwareIDs to login iCloud/iMessage/FaceTime as the generic 144.0.0.0.0 don’t have any hardwareIDs.

How would I go by reconstructing the Mac Pro hardwareIDs ? Thank you