Bios Mods -The Best BIOS Update and Modification Source

Hi! Don't know if this right thread.
I want to do a little updgrade for my laptop.

1) I will put 8 gb ram (easy part)
2) SSD (do it already)
3) Change CPU
4) Use egpu. (not easy but understandable) 9600M is good but DX10 is pain and I have suspicion it's dying.

My question about CPU. I have P8600 CPU Penryn / Socket P. BIOS is latest of. (as I know) 09LA.7027.20081209.JJC.
I thinking about upgrade it to P9600/P9700 - will it fits (bios recognize it?)?

But it will be great if I can upgrade my CPU to quad Q9000/Q9100/QX9300 but it's 45W.
Also WIKI says "Notebook Core 2 Quads are designated Socket P' [sic] and are not pin compatible with standard Socket P motherboards".
Will it fits? Do I need to modify bios for those? Also do I need to replace my 90W PSU to 120W or it's not necessary?

Current BIOS has support for all mobile Core 2 Duo (Socket P).
You can't use quad cores CPU. It's hardware incompatibility. But you can try the motherboard's mod for quad core CPU supporting: