Has anyone tried to delete all pairing of the phone to the car kit and the car kit from the phone, start a new pairing session and this time when the request for permission to download the phonebook, select "decline" instead of "accept". The request will pop up a few more times, just ignore it and it will go away. does the phone stay connected now?
The next time that you get into the vehicle, the request to DL the PB will appear again and as before just ignore it. Does the phone connect and stay connected?
The issue is the way that the PB is being downloaded to the car kit and I have seen this to be the issue when a phone was working but doesn't after an update. Hope this is helpful till a new update comes out that fixes the bug.