Using a plastic opening tool, pry the gray, front face plate until it can be removed from the housing.
To avoid breaking or weakening the tabs on the face plate which hold it in place, alternate the sides from which you pry and check each tab before separating the plate from the body.
Using your screwdriver, remove the four 8.1mm PH00 screws securing the motherboard to the black housing unit and set them aside.
Use the plastic opening tool to help pry the motherboard/midframe up from the main housing. Once you can get a hold of the edge, simply pull the internal components up and out!
Watch out for the ribbon cable connecting the midframe and the motherboard to the GoPro housing. See the next step.
Remove the ribbon cable connecting the housing to the motherboard by flicking up the black clip with the spudger tool and gently pulling the cable out.