On a Fire TV: install Downloader from the Appstore, allow it to install unknown apps (Settings › My Fire TV › Developer options › Install unknown apps), then type this page's address into Downloader and choose Download. After that the app updates itself.
- Updates itself: new versions download in the background and ask once to install - Channel groups open straight away - Back and Left in the TV guide go to the channel groups - Starts channels on the versions that play on your Fire Stick - New logo