Remove all the screws using your Phillips #00 holding the back plate in place. This includes:

On the Back: Unscrew the 4mm screw to the right of the viewfinder.

On the Bottom:

Unscrew the 3mm screw in the top left corner.

Unscrew the four 3mm screws under the battery cover.

On the Right Side: Unscrew the one 3mm screw holding the right-side panel.

On the Left Side: Unscrew the two 2mm screws holding the left-side panel.