HELP: Flash BIOS 2X HD 6990 YOP TEAM I have try some things for flash with edited bios my 2 6990 HIS, but no solution for flash edited bios. More info for my config (new topic in building ) : http://www.overclocking-tv.com/forum/index.php?topic=351.0 I have try: By atiflash in DOS: all commande not worck ( no adaptater found) By ATIWinflash with RBE (in system)par ''acquire/flash" but whene I fore flash I have this error message: ''Unknown! InvalidBIOS or adapter ...'' By By ATIWinflash with .BAT file commande (in system): atiwinflash -unlockrom 0 atiwinflash -s 0 backup0.bin atiwinflash -unlockrom 1 atiwinflash -s 1 backup1.bin atiwinflash -unlockrom 2 atiwinflash -s 2 backup2.bin atiwinflash -unlockrom 3 atiwinflash -s 3 backup3.bin WORK But whene I try this with all backup.bin edited good with RBE: atiwinflash -unlockrom 0 atiwinflash -f -p 0 backup0.bin atiwinflash -unlockrom 1 atiwinflash -f -p 1 backup1.bin atiwinflash -unlockrom 2 atiwinflash -f -p 2 backup2.bin atiwinflash -unlockrom 3 atiwinflash -f -p 3 backup3.bin flash seems to be ok ( no error...) flash time is normal. But after reboot, one i taped "atiwinflash -s" for all GPU to in order to see if edited bios flash has performed well. The problem is : this resave resave stock bios without any modification So flash procedure didn't work. All these test has been done with 2 switch bios mode ans Crossfire bridge enabled and disabled. does it come from the fact flashing software don't manage 6990 cheksum ? Or anything else ? More info for my 2X 6990 : http://forum.hardware.fr/hfr/Hardware/2D-3D/penser-6990-amd-sujet_885272_1.htm VERY NEED to flash this card'S Thanks for your HELP Sory for my bad english.