Forgot to tell i am using mac pro 5.1 . Is that a matter?

I'd like to understand if you're planning to use your graphic card on Windows PC or only on mac pro. In the latter case I think you need a mac efirom (i.e. a mac bios instead of a standard legacy/uefi bios).

I flashed that gtx680 efi rom, the one i sent my first post is a mac efi rom that i am using on mac pro.
But with a problem that i am having efi windows install on my machine it gives error on windows.
That is why i needed a gop uefi rom that i can use with windows under OpenCore bootloader.

The file I provided you before is a standard nvidia evga GTX 680 uefi bios which should work flawlessly in a normal x86/x64 behaviour.
It is not MAC specific, thus if you're planning to install Windows in uefi mode it will work but I don't know how OpenCore bootloader works.

Thus try it and let me know if it solve your issues or not.

Will see, trying to solve another problem. Let you know as soon as possible;)

Please try this new one as I've updated MAC GOP UEFI to the latest version (Kepler MXM cards).

thank you so much I will try it as soon as possible and let you know.
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now flashed the rom and boot screen is still not on. will try tomorrow some tweaks and let you know.

Ok mate.

It gave BSOD error on efi windows. Will turn back to uefi gop rom.

The uefi gop you gave earlier works fine now. will use it for a moment , thanks for helping me. Now trying to solve the pre-boot screen with gop help on mac pro 5.1 opencore configuration.

@Sylar76 Hey, can you check something for me, @Lost_N_BIOS told me to contact you and ask for help :).
I tried to update the GOP with the Update Tool.
Something doesnt look correct. I flashed the vBIOS with GPO Updated, according to the output of nvflash its the newer version.

But my BIOS still say its the old version. Even after a CMOS Reset and BIOS Reflash.

Screenshot:
https://i.ibb.co/1fZS8Nx/GPUCheck.png

Original vBIOS:
http://s000.tinyupload.com/?file_id=00415286770687149238

Updated vBIOS:
https://ufile.io/71xp0v8g

Thanks in Advance.

@st1cky

Try this please. Use the nvflash force option.

Zitat von Sylar76 im Beitrag #941

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@st1cky

Try this please. Use the nvflash force option.

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Try this nvflash version.

Type nvflash64 --protectoff

nvflash64 bios.rom

type Y (yes) if prompted.

Zitat von Sylar76 im Beitrag #943

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Try this nvflash version.

Type nvflash64 --protectoff

nvflash64 bios.rom

type Y (yes) if prompted.

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@st1cky

So how could you say, like before, you've flashed bios if bios on VGA still remains the same ? I can't understand.