I'm happy to know I'm not the only one with the audio lockout issue!! It's only happened to me twice and was maddening, both times I was driving friends around and its rather embarrassing to explain that your luxury SUV has a mind of it's own and "this just happens sometimes..."
Never had any issues like this with any other vehicle I've owned and its not a good look for Jaguar as they're trying to improve their reputation in the luxury segment.
I'll be calling my SM to see if I can get this update for my car today. I also just brought my car in ~20 days ago for the 19A update + Carplay. I'm going to make a case for my $300 to be refunded in some manner since 19B would have given me the smartphone pack for free....
They absolutely should give it to you free. That's the angle I played and it was pretty easy. I've now had it in 9 times for ICTP issues, and it's back in there this week.