I'm gonna beat this dead horse one last time...
As noted 2 months ago, I took my truck to get a software updated because the update that triggered this whole thread was never happening OTA. Instead of upgrading the software, they replaced my screen. The next day, my brand new screen went black. I was too annoyed to go back and argue. But a week ago, the screen went black twice during one trip, then started working again except no audio. I went back to the service department, showed them the TSB for the U148 update that specifically said it would cure problems with "black screens" and "no audio". The counter guy told me again that there were no updates. I begged to differ and showed him the TSB again.
Anyway, after only 2 days in the shop, the dealer finally upgraded my software via USB according to the paperwork I got back from them. The interesting part is that the software version I have now is newer than anything I read about in this thread. It would seem that I have a version U157.
So after all that, I never did get the U150 OTA update that started this whole thread, and I never will.
Horse=dead.