I have an HR20 and HR21 both connected to my Vizio TV by HDMI. They are also both connected to my audio through coax and optical to give me DD. The HR21 came with the RC64 (which also seems to help with the HR20-100 RF problem - so I am now thinking some of the HR20-100 RF problems are to do with the remote too). I can program both DVRs as RF on one remote and my audio box. And I have the TV turning on and off too. My problem is that I still need to change TV Inputs manually as no matter what code I use the TV Input button on both remotes wont change the input. Anyone got it working yet?