How Well Does The Powerlite S6 Projector Work I Recently Purchased A PowerLite 835P And Mounted It To Ceiling. How Can I Get Image To Display Right Side Up?

I recently purchased a PowerLite 835P and mounted it to ceiling. how can I get image to display right side up? - how well does the powerlite s6 projector work

I drove my 835P projector Epson EMP supports the ceiling with blankets. The picture is great, but it is projected is upside down. I looked at the manual, but not the solution to be found. Any help would be very grateful.