Have done the software upgrade to 4.2, talked to Cingular, BMW and Blackberry. All 3 point the finger to the other. Here is the bottom line:
**Cingular will help you update the software to the latest rev. Period
**BMW will only help if the phone is "officially tested and accepted"
**Blackberry knows they have a problem but point out they are Bluetooth 1.1 compliant but they are working on it.
$40k car with a non working $150 phone. I wonder which one I will eventually change? Will wait another month to see if anything happens.