By Burak | Sep 06, 2004 | Mustek
1: Make sure camera is off and self powered via it's battery.
2: Press and hold down SNAP button and PLAY-PAUSE/ENTER key.
3: Power on the camera.
4: As text "KEY TEST DV3M" appears you can release keys.
5: Follow the guide at the bottom of the screen.
Found on Mustek model DV3M D.