I downloaded the U32 update the other day on my computer at my mom's and then i went to my dad's today and tried to update straight to the new u35 and it will and everything but when i start the game and then try to log into s2 (currently as a demo racer) it wont connect to the master server. All it says is that it is connecting to master server and nothing happens, just goes on forever. I still have 1 unlock left so that is not the problem.

Thanks in advance for the help!

It sounds like a firewall problem to me. Disable any firewall temporarily while unlocking.