The ribbon cable is connected to the camera via a plug (the gold colored PCB has a male plug on the other side of the PCB). This plug is at the end of the spudger. You need to pull that PCB boar/plug straight up from the camera (perpendicular to the camera)

Please add to setp 8: The ribbon cable is connected to the camera via a plug (the gold colored PCB has a male plug on the other side of the PCB). This plug is at the end of the spudger. You need to pull that PCB boar/plug straight up from the camera (perpendicular to the camera)