Panasonic LUMIX DMC-G7 Owner's Manual For Advanced Features page 385

13. Others
[Reset Wi-Fi Settings]
[Pixel Refresh]
[Sensor Cleaning]
[Format]
Reset all settings in the [Wi-Fi] menu to factory default
settings.
(Excluding [LUMIX CLUB])
It will perform optimization of imaging device and image
processing.
Dust reduction to blow off the debris and dust that have
affixed to the front of the imaging device is performed.
The card is formatted.
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