Just a couple of days ago i've tried to flash my ASUS Radeon HD6990 (reference).
First, i backed up both BIOS (master and slave) and then i made some changes with RBE (changed the memory speed).
At last i run the windows 7 command line and flash the card BIOS with the following commands:
atiwinflash -unlockrom 0
atiwinflash -f -p 0 unlock.bin
atiwinflash -unlockrom 1
atiwinflash -f -p 1 unlock.bin
Everything was well and i saw the "verified" message. After a reboot i can see no image,
Then i look at the OC switch and it was in position 2, which is supposed to be read only.
Conclusion: the card boots in OC switch at 1 (880MHZ GPU), but wont let me boot when switched to position 2.
I've tried to restore the original BIOS, by switching to position 2 after boot, but the winfash keeps telling me that the it has already the same BIOS version.
Can you help me with that?