Oh yeah, I know there are, but I don't want to have to install something when i've got a perfectly good device that will keep itself up-to-date in my pocket all

Oh yeah, I know there are, but I don't want to have to install something when i've got a perfectly good device that will keep itself up-to-date in my pocket all the time that moves from car to car. Who wants to blow another several hundred on a device that only works for me while I'm in the car? (I also pointed this out originally but I have now owned two cars in the last ten years with head units that couldn't be replaced because the vehicle integration was too tightly coupled.)