I took my 2014 RS in for the computer download update. I was there for over 2 & 1/2 hours. The only good thing that happened was I receive a good free car wash, but the radio was screwed.
When I drove away from the dealership, my radio screen was rotating between AM, FM, XM, iPod and On-Star, trying to find a station or site. This went on for 20 minutes until the radio finally stabilized on an XM station. This is still randomly occurring.
Also, all my radio settings were removed and replaced by stations I never listen to, my blue tooth phone was unpaired and my phone directory was deleted. They also screwed with the left and right side rear view mirrors and put a lot of discoloring shoe prints in my kick panels and center console.
GREAT WORK!
I called the dealer's service department and rhey said this was NORMAL and happens to about 5% of their customers.
I have re-programmed all of my radio stations, re-paired my phone and re-entered my phone number directory. I'm also suppose to return to the dealership for them to correct their errors!

opcorn:
Good luck with that!