Overview of Process:
Step 1: How to find your NavPlus display model #
Step 2: Download the software update file
Step 3: Select and Download the correct file to a USB Key
Step 4: Insert the USB Key in to the front port of the Radio and wait up to seven minutes for the update to start.
Step 5: Wait a few minutes for the update to install
Step 6: Once complete the Radio software will be updated.
Step 7: Verify the update was successful