GT-100: How do I reset to factory settings?

The BOSS GT-100 restores all settings except Pedal Calibration to their factory defaults using the Factory Reset function.
Note: All edited settings will be lost. To back up data first, use the Bulk Dump function (see the owner's manual).

1. Press the [SYSTEM] button.
2. Turn knob [4] to select “FACTORY RESET.”
3. Use knobs [5] and [8] to specify the areas that will be returned to their factory-set state.
   To reset all settings, set "FROM" to "SYSTEM" and "TO" to "U50-4."
4. Press the [WRITE] button.
5. Press the [WRITE] button again to execute.
   When the Factory Reset is completed, you’ll be returned to the Play screen.