How are you trying to flash them?

If WinFlash doesn't work, you may have to use ATIFlash from a DOS/Win98 command prompt boot disk.

I found with the 875/1250 BIOS I had major problems with WinFlash, where it would ramp up CPU to 100% and never actually start/read the cards.

For those using CCC to clock a dual-card set up you actually HAVE to enable Crossfire to select each card in ATI Overdrive, otherwise only one card is available.

Regards,

10e