Once TomTom Home is installed, connect your TomTom device to your computer using the USB cable. This software is available for free from the TomTom website. Once the updates have been downloaded, you can install them onto your TomTom device using the TomTom Home software. Make sure you select the correct model number, as downloading the wrong updates could cause problems with your device. Once you have the model number, you can download the latest updates for your device from the TomTom website. You can find this on the back of the device or in the device menu. If you own a TomTom navigation device, you can keep it up to date with the latest maps and software by downloading and installing the latest updates from the TomTom website.īefore you start, you will need to know the model number of your TomTom device.