this is really simple
-lift up the carpet in the trunk.
-remove the bolts (2 hex bolts ea. side) that are holding the anchor hooks down closest to the trunk lid.
-remove bolts, hooks, etc.
-remove 1 torx screw from the rear wheel well liners on each side by the rear of the wheel
-from the rear of the car, push the whole bumper assy. forward towards the from of the car.
-on each side of the car, remove the bumper by pulling the top out/down and the bottom up/out (you'll know when it's off the bracket)
-slide the whole bumper back off the bummper supports.