Finally installed the "missing" update yesterday after some confusion.
First mistake made: expected the installation confirmation message to appear in the front console, whereas the message kept appearing on the rear screens. Figured out when my son came out to help on second try (in between I reformatted the thumb drive, removed its name and all the mess after spending quite some time on a disappointing first try).
Second mistake: Since we were about to leave for a drive, skipped installation when we finally figured out how it works. On coming back, plugged the drive back to the USB port (near the DVD) rushed to second row (car seat behind driver, so all the way around).... Nada, nothing...
Third mistake: Oops, had the DVD inside, ejected it out, plugged the USB in.. Nothing.. "Defeat is a state of mind; no one is ever defeated until defeat has been accepted as a reality." - Bruce Lee... Determined to make it work, switched off the vehicle and uconnect (opened the front door) sitting in the second row (is not as difficult as it sounds) and restarted. After a couple of tries the message popped up on the screen. Pressed the accept button. Smooth and simple from there and it took around 30 mins for the entire installation to complete.
P.S. the instruction manual provided in the site is an old one, the step to verify the version installed says you don't need to proceed if installed version is 164610. This is incorrect we are installing 17something version.
The streaming option is now available under the input selections but did not get a chance to try it out since it was getting late. Hope this post helps.