Knulli Firefly on Brick menu

Pardon my ignorance, but I tried the latest Knulli Firefly on my TrimUI brick. When I go into a game, none of the buttons work to get out of the game. How do I open the menu to get out or change options? This just works on Stockmix and NextUI. I can basically get in, but I ain't getting out. It's like a bad movie.