The rear camera for the Thinkware F800 and the F770 have different internals (Sony Starvis vs. Sony EXMOR) however, the exterior looks virtually identical. This is great news as customers who are upgrading from the F770 to the F800 can reuse the camera mount for their new rear camera without taking off the tape. To do so, simply rotate the lens so that it is facing the opposite of the mounting pad. At this point you can simply push the camera body away from the mount and it should slide out nicely.
The orientation of the micro USB port relative to the mount for separating the two pieces
The two pieces separated (mount + rear camera body)