I gave up on mine after a coupla days and went back to using a cable. Why? It simply took too long to sync. Not a problem, I'm sure, with a regular BD/DVD player but with my media box, I would lose sync constantly as I jumped around from file to file, testing the projector out. I spent more time waiting than actual watching.
Still, might wanna see if others have had the same problem before you take my only word for it. Could be a case of incompatible equipment or some such nonsense. Anyone?