upgrading my phone from 3.1.2 to 4.0.1

I upgraded to 3.1.2 because i wanted new applications that were awesome and i wanted to use with my iPhone 3g which is jailbroken then the new iPhone 4 came out and my dad had like a pissing contest where hey son my friend upgraded my phone to 4.0 and well since the person that i am can't let that be i upgrade to 4.0.1 successfully and rubbed it in his face. fun^^