Use a Phillips PH00 screwdriver to loosen the four screws along the top of the back cover.

All screws in this device are JIS screws. Official iFixit PH000-PH1 Phillips screwdrivers are designed to be compatible with JIS screws, so they are safe to use. Using a screwdriver other than an official iFixit screwdriver or a JIS screwdriver may result in stripped screws.

The screws are held in place by locking washers, and will not come out of the back cover.