Bios Mods -The Best BIOS Update and Modification Source

I have just buy this notebook, and I would like to know if it's a good idea change the P7350 to Q9000 ?

http://www.asus.com/Notebooks/Gaming_Powerhouse/G51Vx/

Once it is used the same motherboard, that would be possible through BIOS upgrade CPU. Sorry if the post is in the wrong place, I'm new here.