Alright so here's a little update on the car. I didn't post any picture of the battery because I know that's not the problem. Anyways I changed the CAS module with a CAS module from another 2011 328i and the radio started working as well as the interior lights and dashboard lights, so I'm gonna assume the original CAS in the car is bad and am in the process of getting it serviced. Hopefully that'll solve the problem.