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7950 unlocking (7970 BIOS flashing) thread

post #1 of 17
Thread Starter 
I apologise in advance if this has been posted already, but I couldn't find anything obvious so want to start this thread to see if anyone has tried this yet.

Basically If anyone has had any experience of flashing their 7950 with a 7970 BIOS and found any changes in performance, please post here...I have heard that the GPU-Z is showing no change but that unigine shows very similar performance to 7970 for a flashed BIOS:

http://wccftech.com/amd-radeon-hd7950-tahiti-pro-unigine-heaven-benchmarks-shows-promising-overclocking-results/

I'll be getting a Sapphire 7950 OC in a week, so will try flashing a sapphire 7970 OC BIOS (if i can get one) to see what I get, and post the results here.

Thanks
post #2 of 17
I hope you will have more luck than me with it, tried with my MSI TF3 7950. There was certainly a performance increase (it even seemed more stable at higher voltage, could be me tough), but my HDMI port wasn't working anymore, not useful when you have one screen dvi and the other hdmi smile.gif
Would be probably better if I had a reference card.

Anyway, good luck with your flash!

P.S. Anyone has any tips about that HDMI port not working after the flash to 7970 (tried Asus & MSI BIOS, found it strange that it was only with the 7970 MSI BIOS that I got artifacts and Asus one was perfectly stable with my MSI card, the HDMI was not working for both)
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post #3 of 17
Thread Starter 
Thanks,

Im curious as to wether the BIOS you flashed was an MSI 7970 OC BIOS (is there even one?) or just the standard MSI 7970 BIOS?

Also wondering what to expect when flashing one company's BIOS onto another company's card ???

By the way can you link to what program you used for flashing? I read somewhere else that one of the tools is not working.
post #4 of 17
I used an overclocked MSI BIOS, might be why rolleyes.gif

I don't think there's a big problem to flash reference cards BIOS as they're all identified as AMD (the Asus one didn't cause any problem except HDMI). I didn't tried non-reference Asus one (DCII).

For the software, I used ATIFlash as the Windows Flash don't seem to work with my card (no idea about other). Used a FAT32 formated USB, techpowerup have a good tutoriel how to use it : http://www.techpowerup.com/forums/showthread.php?t=57750
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post #5 of 17
Thread Starter 
Thanks for the heads up ^^ +rep

will give it a try next week or so once my card is here smile.gif
post #6 of 17
No problem, might try the Sapphire BIOS tonight to see how it goes, just need to find a way to make that HDMI port working... Just sad there's no shader unlock like the 6950's.
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post #7 of 17
is it possible to flash bios of an asus 7950 dcii top to 7970, because i tired different bios files, differents commandes
create usb ms-dos boot, -unlockrom 0, -f -p 0 "file" syay restart to complete VBIOS update then nothing, ID :697A with command -i still before and after flash 697A and not 6978 like 7970, ID cant change ,
nothing, anyone did it?
post #8 of 17
but my HDMI port wasn't working anymore, not useful when you have one screen dvi and the other hdmi g.gif
post #9 of 17
I'm quite interested in this too, So far the HIS 7970 Bios failed, I'll give the ASUS one a try though!
If the HDMI port doesn't work, it doesn't bother me that much. I can always switch to the second BIOS if I ever need it. When I sell it I'll just flash back smile.gif
 
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post #10 of 17
Just FYI guys, but you may be able to flash with the 7970 BIOS, but this is not like the 6950, you won't be able to unlock anything, you will still have the same card, just with higher stock clocks. You're better off just using the standard BIOS and overclocking it.
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