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#16 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by brothertax 26.06.2020 21:46

start.PNG is where I believe you start. end1.PNG is the first full row of FF I find when searching, followed by end2-4.PNG. I can post more if you think it's farther down the file.

I've also created a video showing my process .

Here's a link to the original saved ROM.

Thank you for your help!

#17 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Lost_N_BIOS 26.06.2020 22:06

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If you guys can't get it, let me know I will remove GOP for you and set legacy as last image.

#18 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by brothertax 26.06.2020 22:41

I think I did it! Attached is where I started and ended. Total length was 10800 (which is similar to yours). GPU-Z is now showing UEFI disabled! Before it was checked. I'm at work but I'll throw the Quadro P400 into the R210 ii tonight and see if it boots!

Here is a copy of my the ROM used for flash my Dell NVIDIA Quadro P400

#19 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by brothertax 28.06.2020 07:14

It works! Thanks again :D

#20 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Lost_N_BIOS 28.06.2020 22:45

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@brothertax - Great to see you got it all working now and did the mod yourself, good job

#21 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by ssj92 07.08.2020 08:44

I'm looking at the vBIOS and mine doesn't look the same.

It's a MXM card so perhaps a bit different?

I have a Alienware M17xR3 that gives 8 beeps (GPU failure) with M4000M (maxwell), but works with 780m (kepler).

I installed AMD 8970M (UEFI vBIOS) and got 8 beeps, used RBE7 to make non uefi vBIOS and it works. My theory is, the M4000M will work as well, including all 9XXM and MX000M nVidia cards maybe even P5000M but need to remove UEFI.

#22 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Lost_N_BIOS 07.08.2020 09:14

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@ssj92 - Send me original unedited correct model dump of the GPU (M4000M ?) that you want GOP removed from, then I can do for you. Is that what is attached above?

#23 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by ssj92 07.08.2020 09:16

Zitat von Lost_N_BIOS im Beitrag #22
@ssj92 - Send me original unedited correct model dump of the GPU that you want GOP removed from, then I can do for you. Is that what is attached above?

Yes the top one attached is a original vBIOS for M4000M.

I just tried modding mine too if you can take a look. Attached to this post.

May I ask if you are using the same method as OP or a different one?

#24 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Lost_N_BIOS 07.08.2020 09:54

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@ssj92 - I am not doing same as OP, similar, but not same. I will do the edit, then you can compare to your edit
Yes, this is odd one, but I've not done many Nvidia either, so could be that making me think it's odd? What you have shown in your image is not the GOP, but the start area of the legacy ROM. GOP starts at 0x1D400h
Due to nvidia signatures, hashed roms and such, this may always fail? - http://s000.tinyupload.com/index.php?fil...711339364096125

If this does not work, I'm sure @Sylar76 can probably remove the GOP for you properly

#25 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by ssj92 07.08.2020 17:29

I'm sorry, could you try this vBIOS? I had my friend with M4000M do a fresh dump of the vBIOS. The one earlier is from a public dump of M4000M.

He has a programmer too so he can always flash back. Thank you

So these ROMs do have a UEFI portion though? I would assume that is what is causing the issue on our older Alienwares not booting with these newer cards. Someone had mention a BIOS mod but they never came back to post it so my UEFI theory is our only hope.

#26 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Sylar76 07.08.2020 17:46

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@ssj92

According to the zipped file you attached before it seems a normal legacy+uefi nvidia bios with GM2xx uefi gop table (the same used on desktop cards).

I've updated it to the latest uefi gop table, dated 2017. If you disable CSM inside bios and boot in full UEFI mode it should work.

#27 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by ssj92 07.08.2020 20:12

Zitat von Sylar76 im Beitrag #26
@ssj92

According to the zipped file you attached before it seems a normal legacy+uefi nvidia bios with GM2xx uefi gop table (the same used on desktop cards).

I've updated it to the latest uefi gop table, dated 2017. If you disable CSM inside bios and boot in full UEFI mode it should work.

Hi @Sylar76 I actually need the UEFI (gop) portion removed from vBIOS completely. The laptop we are trying to use this in, does not have UEFI at all and it seems having UEFI in the vBIOS causes no post.

Thank You

#28 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Lost_N_BIOS 07.08.2020 20:32

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@ssj92 - He could test that one I did earlier, since he has programmer. If it fails, be sure he tests it unedited as well, so you know the unedited one works or not.
Here is the other one, if I removed it correctly should be OK - This new vBIOS you gave is older version, in case you didn't notice. You can open vBIOS in Maxwell II vBIOS tweaker 1.36 to see date/version/checksum (or GOP updater)

http://s000.tinyupload.com/index.php?fil...247701647496623

#29 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Sylar76 08.08.2020 10:45

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@ssj92

Ok, try this please.

#30 RE: [Guide] Remove UEFI Image from NVIDIA vBIOS by Ludolf 08.08.2020 14:37

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After Fermi-based cards, nVidia has more images in their roms. I don't know if the images following after the UEFI-image are depending from the position in the rom, probably no, otherwise described way to remove UEFI-image won't work. Adding empty code at the end isn't necessary since nvflash will recognize image-lenght on its own. If you want to use SPI-flasher: Image should have same lenght as the complete dump.

But it is safe to leave the positions in the rom: overwrite the UEFI-part with empty code and set last rom indicator in VBIOS from 0x00 to 0x80 and correct checksum.

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