[Kenzo]

Seguro, seguro que hay una combinación de teclas, pero no será facil de averiguar.

Para un Raymarine "dicen" que así:

With the Power OFF, Press and HOLD the FUNC, 16/9 and DSC keys while you power ON. Do not release the keys until you hear the audio BEEP which means your done. Then reprogam your NMSI number as per the manual. "

Ya ves que hacen falta muchas manos.

Kenzo