I'm sorry if this is a stupid or simple question but I cannot find the answer after nearly an hour of Googling. For some background I bought a used car with a Pioneer AVH-X7500BT radio in it. It has navigation in it, and as best I can tell, that unit is a Pioneer AVIC-U250. All I want to do is update the maps, but the Naviextras Toolbox says it needs the unit to connect to the PC. The only USB connection I can find in the car is a female end in the glove box that looks like I could stick a flash drive in it. There are videos on Youtube of people updating in this way with Synctool, but my radio doesn't have that.
Does anyone know how this unit is supposed to connect to my PC?
Any help is appreciated. I'm happy to supply more information if it is needed. Thanks!