To update your navigation device you must install either MyDrive Connect or TomTom HOME on your computer, depending on the navigation device you have. more
MyDrive Connect is an application that helps you manage the contents and services of your navigation device. To use MyDrive Connect, you need to install the application on your computer. For more information, see How do I install MyDrive Connect on my computer?
TomTom HOME is a stand-alone program used to make the connection between your navigation device and your computer.
If you are not sure which navigation device you have, see Which TomTom device do I have?