Eh, I was having a couple of beers last night and finally decided "What the Hell! Let's give it a try." I did manage to download it yesterday before it was pulled. I figured if it screwed up I could always run to the dealer over the weekend.
Guess I got lucky. Climate quad buttons still work (including the fake little LEDs) and corner tab shows temp. I did disconnect my iPod, pull the Nav card, shut climate and entertainment completely off before installing.
July 29 build - originally shipped with v2.11 - I do have Nav
.......here's a lockpick. It might come in handy if you, the master of unlocking, take it with you.