How to update your Highway 200
Connect the Highway 200 to a power source via the USB power cable (this could be a PC) and turn it on.
Connect the Highway 200 to a PC using a separate micro USB cable plugged into the socket at the bottom of the radio, do not use the USB power cable.
Select Home - Settings - USB update - Confirm
The Highway 200 will appear on your PC as a mass storage device
Copy the update file ‘‘Highway_200_V1.2_1.31_APP.rel’ to the Highway 200 Drive
Remove the micro USB cable
The Highway 200 Software will be installed automatically and then correctly boot.