the HDX device codes work for the most part on this older switch with the exception of input one i cant get it to work. I had to change the key programming as the defauktnis one off ex input 4 turns on 3, 3 turns on 2. 2 doesnt activate 1 however. I also had no luck using the original remote to learn in input 1 as i think it just sends a pulse and not a staedy IR signal