GR-09: Initializing - Factory Reset
The following procedure can be used to clear the internal memory and reload the factory settings:
(CAUTION: All USER information will be lost. Be sure to back up any information you wish to keep.)
1. Power on while holding Pedal #2.
2. Press the VALUE + button so the display shows "ini".
3. Release Pedal 2 and then press EDIT/PLAY. "Ent" will show momentarily. When the factory reset is complete, A11 will show in the display.