Just Cause 2 Demo Glitch

Ok, anyone who has tried the Just Cause 2 demo knows that it is amazing. It is a combination of GTA, Farcry, Mercenaries, and Hollywood. Even though the demo gives you 30 minutes to roam around and cause destruction, it's simply, not enough time. However, there is a glitch that gives you unlimited time and aloows you to explore the map. It's easy, right as the countdown gets to 10 seconds, wait until it gets to 1, once it gets there, pause the game, then press the guide button. Press the B button, then press the pause AND guide buttons at the same time. keep doing that until the timer reaches 0.