Flashing BIOS, unlocking x4 -> x6

[krisis99]

I was told that my AMD Phenom II x4 965 can unlock x6? I remember finding the site to download the BIOS upgrade but can't remember for the life of me what that site was and how to do it. My dad did it using a flash drive on his formula 4, is this also possible on my motherboard?

 

[Atham]

What is your motherboard model? If it is a MSI then there is this option to unlock cores.