if the yellow button don't work then
actually yes there is another way
Get into the Playlist text and add "Favorite" to the channel line script.
Its not a fast process but it does work if using the m3u Playlist method
This link below will explain the process
http://iptvtalk.net/showthread.php?36923-The-Playlists-Engish-VOD&p=229119#post229119