Mod DELL XPS 8000 bios

[dcaccount]

Hello,

I would like to mod my DELL XPS 8000 bios:

http://www.dell.com/support/drivers/us/e...id=R253101

to add AHCI support.

I have tried with AMIBCP4.53 but once I try to open the bin file of the bios it just says:

"coudn't open the file".

What am I doing wrong? Please advise, thanks a lot,

daniele