I'm just curious as to why you would need to flip the image upside down. Will you be hanging upside down?? 
If you want, you can access the service menu on your TV and you can most likely flip the picture upside down. The option would be called "Mirror" or "Scaler" or similar. Be very careful when poking around in the service menu, you can literally brick your TV.
If you want, you can access the service menu on your TV and you can most likely flip the picture upside down. The option would be called "Mirror" or "Scaler" or similar. Be very careful when poking around in the service menu, you can literally brick your TV.