Use this guide to replace the back cover of your device. You'll need a Phillips #0 Screwdriver and a couple of plastic opening tools to complete this guide.
Flip your device over so the back cover is facing you.
Using a Phillips #0 Screwdriver, remove the ten 7mm screws holding the back cover in place.
Insert a plastic opening and run it along the edge of the back cover. Do this until the entire back cover can be removed.