But if you insist on resetting to factory settings, here is how you do it (excerpt from the 2014 Touring Electrical Diagnostic Manual as posted from another forum).
To enter the Service Menu:
1. Turn IGN OFF. Wait 15 seconds.
2. Press and hold power/mute button. Turn IGN? to ACC.
3. Continue to press the Boombox power button for 2 seconds after the WARNING screen is displayed.
4. Release power/mute button and accept warning.
The Service Menu may display "Diag Service not Avaiiable" when a menu option is initially selected. This message will clear once the system has finished performing the power-on process.
Service Menu Options are: DTCs, Audio, Display, Key input, Component menus, Version info, Reset, Touchscreen. You want to select "Reset".
Reset options:
Pre-calibration reset: Restores fatory default settings. This is recommended when there are radio symptoms and no DTCs*
Post calibration save: Archives customers settings so that they can be restored after a Post calibration Reset.
Post calibration reset: Resets the radio to factory default settings and restores the last archive data stored during Post calibration Save.
You want Pre-calibration reset. Proceed at your own risk.
FYI, I had to do this procedure on mine when I loaded a route with too many waypoints. Despite the MoCo's claim that a route can have up to 99 waypoints, I found out the hard way that the REAL limit is 60. Anything more than that froze the unit. This was last Spring using v1.21.0.4, so I don't know if it has been corrected since.