Fully extent the tablet to the maximum angle. This will make things easier in a later step.

Remove the tablet and all cables (USB, Display, mains) from the dock.

Remove the 8 screws from the back of the keyboard dock, and place them on a beautiful drawing of the keyboards back.

Carefully start prying the keyboard dock open at the top (where the hinges are). I used only my fingers, it is pretty easy.

Don't overextend it, instaead, pry open at bottom, too.

Put backcover aside.