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[Solved] How to reset the firware of mode 1 while you are in mode 2 (backup mode) at an Radeon HD 6950?

post #1 of 8
Thread Starter 
Hello,

maybe some of you remember that it is possible to flash the firmware of a HD 6970 onto a HD 6950.
Yesterday I tried to flash my graphics card as being described here, but my monitor complained that it didn't receive a video source. (I guess I flashed some firmware that wasn't compatible with my motherboard.)
Because of that I switched the lever on my graphics card to mode 2 in order to use the backup firmware.
But the problem I have now is that I don't know how to reset the firmware which is stored in mode 1, as I can't just switch to mode 1 and use ATI Winflash to install the backup firmware, because I can't see anything on the monitor while I am in mode 1.
I already read this post, but as my mainboard is a P8P67 Rev 3.0 I can't switch to another video source like the integrated graphics in my i7 2600K.

Is it possible to flash to storage 1 while I am in mode 2 or do you have any other solutions? Thank you in advance.

By the way: sorry for my bad English.

Dipricyn
post #2 of 8
Boot with mode 2.
Switch to mode 1 when you're in your desktop environment.
Flash.

The BIOS is only read at boot. Swapping to mode 1 and flashing will rewrite that BIOS for you.

Have you also considered modifying the existing BIOS image to unlock the shaders?
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post #3 of 8
I only have experience with flashing the 6900 cards with the Dos flash utility from bootable usb stick since the
windows versions had issues and onetime hanged on a flash, while the atiflash dos version worked properly.

Simply boot up on bios2/mode2, at the screen of the flash utility flip the bios switch to bios1/mode1
and execute the flash bios command.

Instead of trying out various HD6970 Bios, simply Extract your own HD6950 Bios with GPU-z
and modify the bios with Radeaon Bios Editor http://www.techpowerup.com/rbe/
If my memory serves me right is has a checkbox to enable the extra shaders and then flash that bios to your card.
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post #4 of 8
Thread Starter 
Hello, thank you very much for your reply.

@beers:
I didn't know that it is possible to switch modes while the computer is running.
I already guessed that it might be possible to modify the existing BIOS but I thought using a pre-built one would be easier. I think I know how to flash it but how do I modify the BIOS?

@prescotter:
Thank you for your answer. I am going to try that out.
Edited by Dipricyn - 5/20/15 at 10:14am
post #5 of 8
Quote:
Originally Posted by Dipricyn View Post


Is it possible to flash to storage 1 while I am in mode 2 or do you have any other solutions? Thank you in advance.

By the way: sorry for my bad English.

Dipricyn


No, iirc it's because one is the failsafe and one is user flashable. If you force flashed to the failsafe it is from what I've seen dead. I'm not even sure jumping the bios pins on it, aka the gum mod will work. On later cards it like the 290s both bios' are flashable.
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post #6 of 8
Thread Starter 
@tsm106:
I flashed to the mutable storage. Now I am booting from the failsafe.
post #7 of 8
Quote:
Originally Posted by Dipricyn View Post

@tsm106:
I flashed to the mutable storage. Now I am booting from the failsafe.


Just flip the switch over like others have posted and reflash.
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post #8 of 8
Thread Starter 
Ok, I tested it and using Radeon Bios Editor worked out great. I can boot up on mode 1 now.
Thank you very much, guys!
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