GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 04:45Well I am considering going from tuners to actually changing the BIOS but I am very nervous to do it on my GeForce 9800 GX2. I know some of you here have done it and I have looked for a guide of some sort but I can not find anything that is really up to date. My problems are this. I can only see one BIOS with version 62.92.39.00.10 and not the .09. This means in NiBiTor I can't save both BIOS's. Next the program just looks too easy, and I fear if I assume it to be easy to modify then I must not be understanding the program correctly.
I really am only after doing a modest voltage increase and stable overclock setup I have been running with for some time now. What does the bootup clocks button do? Is this to reset to default? Or is this to force it like all other tuners to just change the numbers in the clock rates to change on boot. How do I submit my changes? Or am I generating my own BIOS to upload? I am lost and I know these questions with answers are out there but I am at a loss to find them. Any info and/or help would be great. Thanks!
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Boiler
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 06:49Erm, I guess no one told you yet, NiBiTor will not backup or read both BIOS of either the GeForce 7950 GX2 or GeForce 9800 GX2 as I have a pair of each and from experience, have to be backed up via nvFlash and a bootable DOS media, like a memory stick or floppy. Then individually they can be viewed, edited and saved with NiBiTor. Then reflashed with nvFlash, just how it is using the "-ix" parameter when backup and flashing, making sure not to mixup the two otherwise, nice doorstop. The below are only applicable for the GeForce 9800 GX2, whereas the "-i0" is the BIOS of the bridge chip which you better don't change.
nvFlash v5.xx Commands... "nvflash -b -i1 nv98gx21.rom" (Backup the BIOS of PCB #1) "nvflash -b -i2 nv98gx22.rom" (Backup the BIOS of PCB #2) "nvflash -5 -6 -i1 98gx1new.rom" (Normal BIOS Flash of PCB #1) "nvflash -5 -6 -i2 98gx2new.rom" (Normal BIOS Flash of PCB #2)
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Mavke
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 11:53Just to clarify cause the topic starting seems not to know that well what NiBiTor is for, and that is to tweak a BIOS, so you can save you own BIOS and then edit it and you need of course to save the changes and afterwards flash it. Now don't start changing all, cause some things are indeed simple in the tool but it doesn't mean you know the logic and therefore you won't know what it does. Don't change bootup clocks, just focus on what you know and that is the clock rates, and no the voltages you don't change neither, cause as far as I recall the GeForce 9800 GX2 works already at the maximum voltage. And for reference the next version of NiBiTor should have the backup working for the GX2 for both BIOS's we gotten around it...
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Boiler
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 12:26Glad to see Nibitor will start to be able to read multiple bios,in coming version.
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Elfvis
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 16:38Thanks a lot. I think I now have a better handle on things. Basically I have my stock BIOS which I use nvFlash to generate BIOS backups. Then I load them individually into NiBiTor and make edits, for beginners only the clock rates should be changed to a known stable configuration. Then I use NiBiTor to save the new BIOS's. Once the new BIOS is saved I again use nvFlash to flash these.
A question still is in my mind. Can I run the command line from Windows or should I be in DOS without windows when flashing? Also backing up the originals with nvFlash does no harm, but makes only copies of your BIOS? So technically since the GeForce 9800 GX2 in NiBiTor is reading the second BIOS I have a copy of that or although NiBiTor is seeing that BIOS it will not export it correctly? Thanks for your time and assistance guys.
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Boiler
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 17:09Flashing is done in DOS, with nvFlash with the commands as in the post above. Mavke, I appreciate the edit, though question I notice you name both BIOS's the same doing so I can only place one on floppy at a time. The second will overwrite and replace, so I add the 1 or 2 to differentiate and can flash both BIOS's one after the other from same floppy...
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Elfvis
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 19:06I am correct in that I make originals in DOS using nvFlash. Back them up. Then load one at a time modify in NiBiTor, export the BIOS, and then flash in nvFlash the modified versions from NiBiTor? Thanks...
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Boiler
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 19:39Correct, and you do that from a bootable DOS media so not in Windows as that won't make a good BIOS when using nvFlash. And the same counts when flashing.
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Mavke
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 19:51Boiler wrote: Mavke, I appreciate the edit, though question I notice you name both BIOS's the same doing so I can only place one on floppy at a time. The second will overwrite and replace, so I add the 1 or 2 to differentiate and can flash both BIOS's one after the other from same floppy... Entirely correct and that was an error of mine, corrected it now to reflect the good situation. So each BIOS of the GeForce 9800 GX2 has its own version and you need to make sure you flash each PCB with its own BIOS after having it tweaked. Good catch mate!
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Elfvis
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Re:GeForce 9800 GX2 card and backup BIOS using NiBiTor tool? - 2008/08/29 21:26Elfvis wrote: I am correct in that I make originals in DOS using nvFlash. Back them up. Then load one at a time modify in NiBiTor, export the BIOS, and then flash in nvFlash the modified versions from NiBiTor? Thanks... Alright. I apologize for the constant questions but getting this wrong I hear is not so good.So nvFlash even the creation of the backup is done from a bootable DOS media. Once the BIOS is backed up on this media then I restart Windows and use NiBiTor change and export the new BIOS. Then I reboot again with the DOS media and flash in the new BIOS? Thanks for bearing with me.
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