Because all projectors are designed to be mounted to a ceiling (inverted) or placed on a level surface, they have a built-in function that allows the image to be flipped to accommodate either orientation. To correct a flipped image:
Go to your projector’s MENU screen (location varies depending manufacture and model) and locate the SETTINGS option.
Within the screen settings, select or de-select “Ceiling” mode as needed.
Save the setting (if needed). The on-screen image should now be correctly oriented.