Turns out that the Shield remote's back button DOES work for the Tablo app but I did have to make a modification to the Flirc. Here's what I did to make everything work: On the Harmony Remote (using the MyHarmony software): Attach the Harmony remote.Add the device manufacturer of "Flirc" and the device model number of FireTV (others suggest XBMC or Media Center PC).Rename the device Shield TV.Program your activities.Program the activity buttons and screens to your preference.Sync the remote.On the Flirc (using the Flirc software): Attach the Flirc device. (Note: You may find it necessary to erase come commands.)Under Controllers, select Full Keyboard end record the following commands from your remote into the Flirc:Enter/Return (OK/Select)Windows Key + Enter/Return (Home)Right ArrowLeft ArrowDown ArrowUp ArrowUnder Controllers, select Media Keys and record the following commands from your remote into the Flirc:Play/PauseStopPreviousNextFast ForwardRewindUnder Controllers, select Fire TV and record the following command from your remote into the Flirc:Go Back (ESC/Back)