Asus gtx 580 bois volt mod - Page 2

For the issue you are having with writing to the second card, I found this thread here that referenced having the issue of write protection.
http://www.overclock.net/t/1057470/modded-bios-for-asus-gtx-580-directcu-ii-works-with-ref-580-cards
"My card was write protected so I had to use the --protectoff option to unlock it before flashing. Read up on NVFLASH before you attempt this, here on OCN and use Google too. BE AWARE THAT BIOS FLASHING CAN BE RISKY AND COULD BRICK YOUR CARD."
Where that is at I am not entirely certain, as my card is a zotac, and I didnt have to go through any of that, unless it was clicking the voltage unlock in msi afterburner, or is an option not available to my card, that is within nibitor.

Did you do anything to the first card that you did not do to the second card? As in any sort of overclocking, or voltage tweaks that you did not do to the second card? And if not, did you start this procedure with both cards in the same state?

edit: Alrite, I just tried with the last three versions of nibitor to find a write protection setting within nibitor. Im going to try messing with nvflash now and see what I can try out and mess with.

So, apparently there is an option within nvflash to turn the protection off

Now, using the method in my tut. It pretty much skips the option to actually enter commands into the prompt. I'm trying to find a way to use the commands within windows still. This may take me a couple days, as Sundays are busy days for me, and tomorrow all my water cooling supplies are coming in so thats going eat my time tomorrow.

second edit: See if this works. Open your command prompts, navigate your way to the folder where you have your nvflash. once you have gone all the way to opening nvflash through your command prompt, type in this command.

nvflash [options] --protectoff

You will get the loud beep again, but that should turn your write protection off. Again, you are going to have to restart you computer after you have done this. Then go through the process in the tut again and let me know what happens.
Edited by jesusboots - 2/12/12 at 12:11pm

Alrite. Then I am out of ideas, Maybe two cards just will not flash while they are both installed. I suppose you could try disabling the first card through nvidias control panel, or taking out the first card temporarily. And if that still fails, take out the first card, then put the second card into its place to flash, and then reinstall both cards and see if that worked properly.

Any update on this? Did the usb way work?

ok, i had a similar problem. two cards the same (560 ti's) but with different bios versions on them.
before i did anything i wanted to get the same bios on each card, but was running into the same eeprom locked issue.

I found that the full line command doesn't work.
however, if you use the short command, "nvflash -r", it does work

i did this at the command prompt, not in DOS because my stupid mobo will not go into DOS
oh, and i had only the one card in the machine, just in case, ya know

I hope this helps.