You can easily reset any nüvi and return it to factory new condition. This process is sometimes called a factory restore because it deletes all custom POI and favorites that have been stored on the device. This has been confirmed to work on the nüvi 700, 800, 1200, 1300 and 1400-series models.
- Power off the nüvi
- Press and hold the bottom-right corner of the touchscreen
- Power it on
- A prompt will ask you “are you sure you want to delete all user data?”
Choose wisely young jedi, there’s no undo
Another neat trick: You can access about a dozen pages of nüvi diagnostics by pressing and holding on the battery icon for three seconds.