Quote Originally Posted by Pyr0 View Post
I've modded the Extreme F8x BIOS and updated the Intel AHCI ROM to 1.20E and Intel RAID ROM to v8.5.0.1030
I tested it by flashing it to my UD5, and AHCI is working great.

If anyone would like to try it:
http://wright-pc.com/pyr0/UD5/EX58_Mod/EX58EXm.F8x
Pyr0, you rock!!

Saved me some time doing that myself (was still waiting to get F8X mailed to me)