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Wirelessly posted (iPhone 16GB: Mozilla/5.0 (iPhone; U; CPU iPhone OS 2_1 like Mac OS X; en-us) AppleWebKit/525.18.1 (KHTML, like Gecko) Version/3.1.1 Mobile/5F136 Safari/525.20)

it's the 2.x software that's the problem: some versions of the BMW software work but most don't. Mine worked with 2.02 but 2.1 broke it :(
 
My car worked fine with my 1st gen iPhone on the 1.1.x software, worked fine on the 1st gen iPhone with the 2.0.x software, and still works fine with my new 3G running 2.0.1 thru 2.1.

No audio echos. Phonebook is synced correctly. Very pleased with the functionality.

2006 BMW 330xi with iDrive and Nav. No firmware updates to the iDrive system since I took delivery.
 
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