Now I'm no expert on hacking devices... but I have a basic idea of how it works. I'm pretty sure the security on the 4G is low... and we'd need someone with the basic knowledge on programming (objective-C?... idk) But here's my basic idea. In an .ipg (iPod Game) there's a folder with executables. In the directory above, there's a file called manifest.plist which lists the executables so the iPod knows what executable to run. Now if we made an executable that would "jailbreak" the firmware to run custom firmware... that would be pretty sweet! Now I have no idea how to do most of this, but it's a small start.