Problem with hack BIOS

[drumazohm]

Hi insanely mac.... i have a problem

 

I want to instal iatkos 10.5.7 on my desktop with mobo Asus P5QC and quad core Q8200 but for this motherboard i need to hack my bios to the version 1406 but i can't.... when i go to update on Asustek EZ Flash and put the bios 1406 appears this message: ''Version in ROM file is older than existing board!''

And other think is that i can't disable Drive Xpert Control, auto is selected and i can't change this.

 

if someone can help me I will appreciate very much!!!

 

Here is a pick of the problem: