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I did the retrofit combox and apps on 2010 X5M....honestly for me was a waste of money as BT audio was the best feature ...the apps were somewhat disappointing ..for the ones on eBay u will still need to do some coding and there was a special harness that bimmertek provided ...there is an old thread here that lists out the install ...if you are going to send 1k plus I would do NBT
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