Warning: This procedure erases any presets stored in RAM.
Initialize NVRAM (factory reset)
- Hold both Cursor (
<>) buttons down and power on the unit. - Once booted into the Diagnostics menu, turn the Data Wheel to Initialize NVRAM.
- Press Home/Enter.
- Press Home/Enter again to confirm.
- Turn the unit off, wait a few seconds, and turn it back on.
Source: emumania.net