hi using harmony 650 as for button to power it of i dont know exacty. ive followed your instructions ,but you dont mention anything about configuring a power of button using flirc , i presumed the back button configured in flirc would take controll of that as on original nvidia remote press and hold back button brings up shutdown menu pop up , but not when using harmony 650 it seems its only registerred as a single press back button, holding the back button does nothing except go back , i dont see how i can assign an actual key in harmony software to shut down as you cant register a key command from nvidia remote as its not ir unless im missing something any ideas ?