I've already seen ZiPhone 2.4 and iJailbreak and was going to use one of those to unlock my iPhone. But more recently I have seen one called Geohotz. It is supposed to unlock the iPhone and not brick the iPhone with future Apple updates. How does that work? All of that sounds perfect but there must be some downsides? Is the any GUI interface to use Geohotz and unlock the iPhone? I'm not very good with all the code and stuff. Thanks!