Okey, since there have been several requests, here's the sequence as I was told.

-cb

    1. Power down the Korg.

    2. Connect a MIDI cable from MIDI OUT to MIDI IN.

    3. Press and hold the MISC and SAVE buttons at the same time.

    4. Power up the Korg.

    5. When the LCD displays "168RC" release the buttons.

    6. When test mode appears, power down the Korg.

    7. Remove the MIDI cable.

    8. Power up the Korg.

This will reset to factory specs all parameters and programs.