We've got an asus P6X58D Premium mainboard with an intel i7 930 2800 cpu. The bios is
only seeing 4G of memory ever since I upgraded it (there's 12G installed). Hwinfo
and astra32 both are able to see all 12G. I've tried many different bios flash programs
trying to downgrade it back to the original but none of the programs are able to do it.
The more recent afudos programs (v4 onwards) are able to downgrade but they
give an error "problem getting flash information" when I try it. Asus uses the older
afudos programs (v2) which don't have downgrade ability. I was thinking of trying
using flashrom (a linux program) as a last resort.

Anyone know a way to do it in windows or dos?

Thanks.