I updated to the 06/17/2019 release (Rel_A18.104.22.168) and that seemed to have resolved my problem with the microphone no longer working after connecting up my iPhone. Besides happening randomly I could repeatedly recreate the issue if I connected the phone too soon after boot or putting the vehicle into reverse too soon after connecting the phone.agreed. took it in again today with a laundry list of times it bugged out (reset while driving, music playing after answering a phone call, etc) and voila! another software update was available which "is going to fix all the issues." if it would jsut update when on wifi and not only at the dealer that would solve a lot.
On this new release placed the car in park and the radio shut off. It looked like it was working and I could adjust the volume knob and see the meter on the screen. Source button didn't work nor did changing stations but the moment I hit the radio button it was working again.
These programmers are playing wack-a-mole and losing. As for the wifi updates I think there is a reason they aren't using it. Its just another feature that wouldn't work right.