Map updates on Kenwood DNX9140.

Start with Unit turned off
Plug a Mini USB cable into the back of the unit
Hook up the other end of the USB cable to a laptop
Power unit on and go to the nav screen.
It will ask you to select USB Mode or Garmin Mode
Select Garmin Mode
Use MapInstall to put maps onto unit.

Hooking the unit up is the hardest part to install the maps . Must know have to restart the unit. After you get it all hooked up, this guide is pretty straight forward. It’s also useful to keep the USB cable hooked up to your unit and run it into the glove compartment for future updates too. You can also add vehicle icons and voices through Garmin Mode.