The is a classic automotive dilemma. On one hand, a successful update restores your factory nav to a usable state, increasing resale value and reducing windshield clutter. On the other hand, the process is finicky, the official discs are overpriced, and the map data will never be as fresh as a $15 phone holder.
Press the tilt button again to close the unit face. 2010 toyota prius navigation dvd update
A progress bar will appear on the dashboard screen. Do not turn off the car during this process, as it can "brick" the navigation unit. The is a classic automotive dilemma