This is one reset, but not the one you may be looking for:

1. Pull up the dial pad and enter: ##4357*  This will launch RTN Menu page
2. Select View
3. Scroll down to the bottom of the screen; select RESET  This will launch Enter MSL Code Pop up screen
4. Touch input window, then keypad will show up. type: 000000 (6 zeros) for MSL code and Hit OK
5. Reset to factory Settings, select OK