We lively suggest you to do a full back up of your device before you keep on downloading. Read the handbook of your device to have further pieces of information about that.
Unless you use a Tom Tom device that recharge by USB plug-in we further suggest you to link your Tom Tom device to the recharging cable.
To transfer the routes data you formerly have to copy them into your PC. Then you can install them into your device by the software POI Loader by Garmin. Do the following passages:
Download routes
1.Download the routes and save them into your desktop.
2.The routes are zipped-in and so they have to be unzipped. Use the suitable software that you have in your PC system to check out the files.
Copy the routes into your device
1.Connect your Garmin device to the PC by using the USB cable.
2.Go to Start > Softwares > Garmin > POI Loader.
3. Press Proceed and wait for the software to recognize the device, then press Proceed.
4. Select the case Install new customed Points of Interest on your device and press Proceed.
5. Click on Search and select the directory where there are files of routes. Then press Proceed
6. Wait for the chargment of data and click on Finish.