One thing puzzles me. Don't think it's been mentioned yet, sorry if it has.
It's been reported that most '22s were updated at the port. Could be the port of export, or import, I don't know. In any case, thousands of '22s were successfully updated to 3.1 prior to delivery. Was the success of this update due to those cars having something higher than 2.1 when they left the factory, making the updates easier? Or if they went from 2.1 to 3.1, why did it work well?
My wild guess/speculation is the weakest point in this upgrade is at the dealer level. The '22 cars that were updated at the port(s) were probably worked on by a team of factory trained specialists who really knew what they were doing.
If I have any of the '22 port update info wrong, feel free to correct me.