G92-270-A2 to G92-400-A2

[hal2710]

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WARNING, WHILE TRYING TO UNLOCK MY VIDEO CARD, I HAVE BROKEN IT AND CANNOT FIX IT.

*****Disclaimer*****

Do any of the following at your own risk.

I will not be held responsible for any more broken video cards, etc. etc.


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Hi,


I have been looking into the possibility of "Unlocking" the G92-270-A2 into the G92-400-A2.

Here are my results so far :-

I got an Xpertvision 8800GT 512mb from http://www.ebuyer.com/product/139632 , now sadly sold out.

Made a bootdisk with drdflash.exe from www.bootdisk.com and copied over all the files for nvflash 5.57 to work (nvflash.exe and cwsdpmi.exe).

I made a backup of my bios file with this command :-

nvflash -b backup.rom

Then in WinXP with NiBiTor v3.7, I changed the Device ID from 0611 to 0600 the same as G92-400-A2 (8800GTS).

I made a G92-270-A2_id_0600.rom and flashed to the video card as follows:-

nvflash -4 -5 -6 G92-270-A2_id_0600.rom and said "Y" to all error messages. Nvflash said that everything was verified OK so I rebooted. The Device ID had stayed the same 0611 ???

OK, now I flashed a genuine "Palit 8800GTS G92-400-A2 512mb" bios file to my card (from a well known tech vga bios collection), same settings

nvflash -4 -5 -6 G92-400-A2.rom and reboot.

Now I have device ID 0610 and WinXP does not recognise the video card, so I hack the drivers and call new card "8800 GT Ultra" and reboot. Video card gets recognised and installs drivers. I reboot. Computer starts OK, loads WinXP OK, but at Desktop; video corruption, flashing pixels, then boarders, then blocks, then system freezes. I Power Down.

Somehow when I flash the bios the Device ID does not change properly ??

My thinking is that either the bios is not "Fully" flashing or the Device ID is set somewhere else on the video card ?

Any thoughts anyone.

Gone for beer after this.

Hal2710