Hey everyone recently got a used 2006 mazda 3s GT with bose. The sells men told he had replaced the head unit because it didn't work, I believed him because it turned on and everything but didn't really check. Turns out no sound, took it to a audio shop and was told I didn't have the ORIGINAL radio but he fixed it anyways. Can anyone tell me what the original bose HU looked liked? I know they are all similar but I believe mines is the standard one I don't even think it has a 6dics changer! Mines says hello when I start it not bose. Also is it suppose to have Sirius XM??