I was having a hard time getting the AUX mode on this remote to utilize all available buttons. In other words, DVD player codes do not use the Menu/Guide/Last functions, and DVR codes do not use Play/Pause/Stop functions. The code 01877 is undocumented and unlocks all functions without interfering with the cable box. I assume its a code for an older cable box that is no longer used. Now I can assign every single button to a key. EDIT: The above code produced some strange behavior and was not reliable. After more experimenting with codes found here, 00869 produces good results. The only downsides are that a couple non-essential buttons are not implemented (Page+/-, B, C). However, this is the best one I have found so far. Please post if you find something better.