Oh wow...seems we have a database error up there in post 1.
Changing the cabin filter is pretty simple.
1. Empty glove box.
2. Squeeze sides of glovebox and pull further open so the rubber feet move to the other side of the dash.
3. Open air filter box by pulling the 2(3?) tabs off and then pulling the door open.
4. Remove filter paying attention to which side has garbage on it and which way airflow goes.
5. Install new filter in correct direction.
6. Reverse steps 1-3.