Garmin GPS in Wrangler

So I got this Jeep Wrangler with Nav. Its a Garmin GPS. Controls look familar but dumbed down. For example there is no ability to load a .gpx in to the device nor download historical routes data.
Would you happen to have any clues if its possible to put a different software load into the GPS such that I can perform the normal functions Ive enjoyed with the handheld? Like loading a .gpx and calling it up in the device to provide turn by turn and downloading the actual route traveled for evalution with Basecamp?