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Is it a dual bios switch?

post #1 of 8
Thread Starter 
I have been looking over my Asus 6950 DirectCUII 2gb and I have noticed a switch by the crossfire ports, is it a dual bios switch or is it a DVI switch like Asus says?

http://www.asus.com/websites/global/...xmonitor02.jpg

I have heard that some of these cards are unlockable but I would feel safer doing it if i knew it was a dual bios switch just in case.

Thanks,
Zach
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post #2 of 8
Save the BIOS using GPU-Z to your desktop, make a small change such as increasing or decreasing the core clock by 1MHz, flash it, then shutdown your computer. Change the switch position, and save the BIOS again under a slightly different name. Then do an hash check on both of them such as a simple MD5 check, if they are identical then the switch probably doesn't change the BIOS. If they don't match, that means the BIOSes are different between the switches. The only problem would be that means the functions of the display output switching is BIOS dependent.

According to some reviews I've checked they say it is a BIOS switch,
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by LemonSlice View Post
Save the BIOS using GPU-Z to your desktop, make a small change such as increasing or decreasing the core clock by 1MHz, flash it, then shutdown your computer. Change the switch position, and save the BIOS again under a slightly different name. Then do an hash check on both of them such as a simple MD5 check, if they are identical then the switch probably doesn't change the BIOS. If they don't match, that means the BIOSes are different between the switches. The only problem would be that means the functions of the display output switching is BIOS dependent.

According to some reviews I've checked they say it is a BIOS switch,
Ok so I flashed a new modded version of my bios with just a 1MHz change and got a blue screen on reboot, so I flipped the switch to the other position and booted fine so Im assuming its a dual bios switch, so now how do I reflash the original to the position where it blue screened? I used ATIWinFlasher and RBE to change the settings
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post #4 of 8
Quote:
Originally Posted by ZachOlauson View Post
Ok so I flashed a new modded version of my bios with just a 1MHz change and got a blue screen on reboot, so I flipped the switch to the other position and booted fine so Im assuming its a dual bios switch, so now how do I reflash the original to the position where it blue screened? I used ATIWinFlasher and RBE to change the settings
That would appear to prove there are 2 bioses.

To restore the BIOS, boot the computer in recovery BIOS mode, or how you are at now. Then start up the program but do not flash it yet. When you are ready to flash, flip the switch back to the original position and flash it back to the original BIOS you backed up.

If the shader unlock doesn't work, this would be the same procedure to recover from that.
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by LemonSlice View Post
That would appear to prove there are 2 bioses. To restore the BIOS, boot the computer in recovery BIOS mode, or how you are at now. Then start up the program but do not flash it yet. When you are ready to flash, flip the switch back to the original position and flash it.
Ok sweet, thats what I had read but just wanted to confirm. Thanks alot Ill post back if I get it working. Thanks Again,
Zach

EDIT: I tried flashing the original bios back and ATIWinFlash ended with Fail, not sure what I did wrong..

2nd EDIT: Rebooted anyways after the fail and its working just fine, gonna run some stresstests to see if its working correctly then Ill try flashing it again with unlocked shaders. Thanks again for the help LemonSlice
Edited by ZachOlauson - 8/21/11 at 11:58am
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post #6 of 8
I never bothered using ATIWinFlash, I've always stuck to ATIFlash that runs off a bootable DOS disk for the sake of reliability and peace of mind, and it's never failed on me before apart from the time where my card was actually bad.
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post #7 of 8
Thread Starter 
Ok I found out my major problem: wasnt uninstalled AMD drivers when flashing, so now everytime I have flashed it boots just fine but my shaders dont change, so I am wondering does it matter which position the bios switch is in? Like is one of the protected from change or something?
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post #8 of 8
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can I mod please close this thread? I figured out what I need and dont want to bother anyone else. Thanks again LemonSlice
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