Is this BT system the same in all 2005/2006 bmw models? I have a new 06 330ci and was told the BT system can't be upgraded because they don't stock parts. I have a red dot on my bmw business radio. Would love to get the bt working with my old iphone 5. The X I use the mediabridge, it's awesome. Even though my radio MID is disconnected.

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X5 3.0 AUTO -2001 - 238,000 miles