Hack away - GM will never upgrade the 2013's for sure. When we bought the car the marketing was that they would be doing updates and apps - nada. As for making it work - have your iPhone nearby and press the main button to get Siri which works through the car Mic. You can send texts, google stuff, find locations and map stuff. Sadly that great video screen in the car goes unused. I have an iPad mini about the same size and I think the best "upgrade" maybe to just buy a suction cup holder and use the iPad for everything. Don't mean to be so negative but part of what sold this car to me was that Cadillac was thinking much differently - but they got over it apparently.