Download the Fox LiveUpdate, install it, it will allow you to update the bios from inside windows
BTW: Neither I, nor will tomshardware.com! accept any liability for damage to hardware caused by following these instructions. Use at your own risk. It is recommended that you make a backup your BIOS first.
Also, I thought my board can only allow me to upgrade to a processor with 95w, the one you linked me was a 125w
I check the compatibility and it has the x6's marked, ill get the link hold on