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2. You can view the OS version, GPS firmware version and other system information..
3.6. Volume
1.
Tap
the
Volu m e
icon
in
the
System
Menu.
2. Adjust the volume by dragging the wheel.
3. Dragging to left will become mute, and opposite will become larger.
3.7. Backlight
1. Tap
the
Backlight
icon
in
the
System
Menu.
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