The device is oriented with the camera to the right and the external button towards the top of the picture.

Locate the shorter ribbon cable and the black pressure tabs that hold the ribbon cable in place.

The tabs used to connect the ribbon cables are fragile and can easily be damaged.

Use the plastic spudger to gently slide the tabs about 2mm away from connector.

Once tabs are successfully disconnected the ribbon cable should come out of the port without resistance.