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Originally Posted by yeowzer
johanas007,
I think the BMW compatability chart for Sirius says 10/03 production date. Mine was 11/02 so I needed the radio module upgrade. It's pricey but I wanted everything to integrate with my navigation so it was clean. I bought both from EAS and Tom G. It was a fairly easy install.
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On Sirius qualification, the Business CD is a 09/02+ build, while NAV-users are 03/03+. Of course, earlier models can be updated to be compatible for Sirius.