enable (not activate) sirius radio in 2010 328xi??

I recently purchased a 2010 328xi sedan and it doesnt "have" sirius radio. It has the nav package, ipod (30 pin)and Bluetooth. I was told by the salesman that they can "enable" it in my particular radio, as the head unit was replaced with a newer one just before the dealer sold it to me. he says its in the radio, just not enabled and it costs $350, and will include a 1 year subscription.



Does this sounds right??



if thats the case, can they also enable the "advanced bluetooth" so that i can stream music from my iphone?

enable (not activate) sirius radio in 2010 328xi??