(SOLVED)Need Help unlocking My HD 6950 2GB

[Durvelle27]

I was thinking about trying to unlock the shaders on my Sapphire HD 6950 2GB. i want to know how can i do this. Thx for any help received

this is the card i ordered

SAPPHIRE 100312-3L Radeon HD 6950 2GB 256-bit GDDR...




Keep getting this error

 

[RussianSensation]

Main thread
http://www.techpowerup.com/articles/overclocking/vidcard/159

If you get an error like ID mismatch or Could not erase ROM, then you'll have to do some extra work in a Windows command prompt (or DOS): Run atiwinflash -unlockrom 0 followed by atiwinflash -f -p 0 bios.bin where bios.bin is the path and filename of the HD 6970 BIOS you downloaded.

Follow this guide for a manual flashing procedure:
http://www.techpowerup.com/forums/showpost.php?p=2134576&postcount=19

 

[thilanliyan]

Are you sure that card is flashable? Not all 6950s, especially the non-reference ones are flashable.

 

[Mir96TA]

Your don't seems to even have a Bios Switch

 

[Durvelle27]

Your don't seems to even have a Bios Switch

yea it does

 

[Durvelle27]

just gonna oc it

 

[thilanliyan]

I personally advise against unlocking it. You probably void your warranty when you do it too. You're better off just overclocking. You get a larger performance benefit from higher clocks than you would with unlocking shaders from what I have read.

 

[Durvelle27]

can i use these BIOs

http://www.techpowerup.com/vgabios/106183/Sapphire.HD6950.2048.110816.html

 

[RussianSensation]

You can try it.

 

[Durvelle27]

You can try it.

try and it went through rebooted installed drivers 12.8 and it still shows everything like a stock HD 6950

 

[RussianSensation]

Even the clock speeds didn't change? You sure you flashed using the correct BIOS switch? It won't let you flash if you didn't move the BIOS switch since one of them is a read only bios.

Here I uploaded my unlocked shader PowerColor PCS+ 6950 BIOS 1536 shaders, 880mhz GPU clocks:
http://www.2shared.com/file/8p5rg9br/powercolor_pcs_6950_standard_b.html

But it'll have that card's fan profile (so set up a custom one in MSI afterburner if this is too loud for you).

 

[Durvelle27]

Even the clock speeds didn't change? You sure you flashed using the correct BIOS switch? It won't let you flash if you didn't move the BIOS switch since one of them is a read only bios.

i currently have the switch set to the one position i think

 

[RussianSensation]

Did you try the RBE shader mod on your original card's BIOS first?

http://www.techpowerup.com/downloads/1962/TechPowerUp_Radeon_Bios_Editor_v1.28.html

Then tried flashing this new Modded BIOS of your own card and it didn't work?

This Guide also tells you how to do it:
http://www.vortez.net/articles_pages/his_amd_radeon_hd_6950_2gb_review,23.html

 

[Durvelle27]

yes and yes

 

[RussianSensation]

Tried the flash on both BIOS switch 1 and 2 positions?

If RBE mod or an HD6950 1536 Shader BIOS mod didn't work, your card can't be unlocked.

 

[Durvelle27]

yep and yep

 

[thilanliyan]

Then it probably can't be unlocked.

 

[thilanliyan]

Not all 6950s, even ones with BIOS switches can be unlocked.

 

[Durvelle27]

ok can you guys help me oc it then

 

[thilanliyan]

I use afterburner to OC and Unigine Heaven/3DMark11 as a stability tester for quick testing, and then gaming sessions for long term testing.

 

[Durvelle27]

i have sapphire trix installed

 

[Durvelle27]

i figured it out got it stable at 880/1375 thx for everyone's help

 

[p_monks33]

Sorry, I see you solved it already, I didnt catch this thread until today, That card is built upon a 6870 PCB it looks like. The same goes for the HIS ICEQ versions and the center fan HIS 6950's . I found this out the hard way after I got water blocks for 6950's and they turned out to be 6870 PCB's. IDK why companies did this?

 

[thilanliyan]

IDK why companies did this?

To save on cost and development time most likely.