Hi Guys...I am just coming around to this again since I need to fix addl issues...Regardless, I was never able to actually 'Learn' any of the commands from the Samsung Smart remote (is it a bluetooth/Rf remote...? - Not sure why learning wouldn't work) ...anywho, I am still wondering wondering about what code i should use for the U shaped 'Back' button on the Samsung smart remote?? I will re-read this thread again..maybe I missed something.