I gues it may be a dumb question but still. 

I have a great radio (AVIC Z3) that everything works on but the maps being last updated in 2012 is killing me with new roads, road changes and address not found. 

Is there any way to update maps without buying a new radio???

This thing cost $1800 new and it’s ridiculous that I have to drive with a gps radio and iPhone maps open at the same time.