My Xfinity tech just "upgraded" my X1 box and replaced myXR11 remote withl the new XR15. I like the design generally, but it DOES NOT have the ability to back up 10 seconds - there is no button! I know that I can do this using voice, but the XR15 does not always correctly recognize my voice. If I am watching a recorded program it may take me to some random list of available movies, etc. I have to believe that the 10 Second backup button has been the single most useful button used when watching programs live and recorded. I SELDOM use a 5 minute forward/backward function. AND how would a mute person control the remove without appropriate buttons. I have tried suggested programming techniquest on the forum to no avail. FIX THIS XFINITY!!!!!!!!!!!