GBS Elettronica 41986 Manual Del Usuario página 57

2.4.1 OSD Language
Set the language to display the OSD information.
2.4.2 Keypad backlighting
Select to set the keypad backlight duration (OFF, 5/10/20 seconds).
2.4.3 Software Update
Menu to update software or using USB port, save the update file on the external memory,
insert it in the USB port and enter the update menu.
Select the file and return immediately to the previous menu
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