Remove six screws from the back of the device using a Phillips #0 screwdriver.

Ensure the switches are in the position from the previous step, as they are not held in place and can reverse direction.

Gently pull the back up and open the radio in the form of a book, with the battery compartment being the spine.

Lay the controller on its front so that as the last screw is removed, the two halves don't fall apart.