Dell Precision M6800 and Nvidia Quadro P5200 16GB
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vBIOS specyfication:
Bios Version: 86.04.A2.00.31
Bios Date:    21 febuary 2018
GPU Clock:  1316 Mhz
Memory:     1804 Mhz
Boost Clock:1569 Mhz

I have rev.D of P5200 card and soldered EEPROM chip Winbond W25Q40EW 1.8V, my Dell have EDP screen
You must select Switchable Graphics to ON in BIOS without this the lid screen will black.
The only way to flash vBIOS file into graphic it's use external programmer like CH341a with 1.8V adaptor.

vBios was created by joint 2 files, vbios from techpowerup site and header shared by macrumors user @Shawn09345

If you want to donate me, use:

  https://paypal.me/colohgc