I recently acquired a fully loaded 2007 Jeep Commander, hence it came with Sat Radio and GPS. This is my first Jeep ever and I love the vehicle; however, I am not entirely sold on the dated GPS system's display or functionality. Does anyone know if there is a way to update not just the maps but the GPS system? And if not possible, has anyone ever changed out the radio/GPS for a more updated one.? I would specifically be looking for a system that allows me to still use the volume control and the channel changer on the steering wheel, ideally from a newer Jeep product. Does anyone have any suggestions as to what Radio/GPS systems would be more modern and work better from a functionality standpoint? Thanks, any insight is greatly appreciated.