This video shows how to hard reset GoPro Hero 3 and 3+ cameras.
A hard reset is sometimes useful if the camera acts faulty, hangs, shuts down, or Wifi hangs. A hard reset will reset all camera settings but it will not delete data on the SD card.
Samsung MicroSD Pro: http://goo.gl/vPfV4x
SanDisk 128GB MicroSD: http://goo.gl/jb20gG
GoPro Hero cameras: http://goo.gl/fazFzW
GoPro Blackout housing: http://goo.gl/82I4PA
Software:
GoPro Control: http://www.tequnique.com/gopro
GoPro Browser: http://www.tequnique.com/goprobrowser