Default [Q] Existenz 3.3.0 turned my Sony Xperia 5306 into a 5303

Existenz 3.3.0 turned my Sony Xperia 5306 into a 5303. I was wondering if this is what is supposed to happen? and does it affect my phone? my phone was 4G and i have only been able to get 3G network coverage? Need answers particularly the 5306 into a 5303 :P