This tutorial includes:
1) Remove the camera from the top of the box
2) Get the black mount off the case
3) Open the case/ frame
The new camera comes inside a waterproof case/ frame, attached to the box with a mount.
Since there are two versions of the mounts, please watch the video in the link below, and according to your actual situation, get the camera/case off the box.
PS: The black mount glued to the box is only used to keep the camera steady in transit.