I also have a blank Chunghop L336, and another remote which communicates fully with the OSSC (although it’s short a few buttons). When I try to teach the L336 from my other remote, I can only teach the power, pause, play, stop, and eject buttons on the L336. All other buttons don’t work. To make sure I’m doing this right (https://www.youtube.com/watch?v=4E6lm0wLxQ0), I try programming the same command (e.g. OSSC menu, or LCD on/off) into all Chunghop buttons. Only the few buttons mentioned above work.