Bios Mods -The Best BIOS Update and Modification Source

Here is what I have

Manufacturer: HP
Model: Envy 17 2000 CTO
Bios revision: F.18
Bios Type: InsydeH20 BIOS
Bios Download Link: http://ftp.hp.com/pub/softpaq/sp54501-55000/sp54881.exe

I understand it is RSA signed and am willing to take the risk.

Thanks for any help, want to be able to enable AHCI.

Its been awhile with no reply. Is it at all possible to unlock my bios?

Can someone help us out? we are both in the same boat!!!