OpeniBoot: Linux console on iPhone
This tool allows you to install the OpeniBoot on iPhone and iPod Touch. This offers the possibility of using the Linux console on our Apple devices. Once the code is installed we will be able to choose whether to enter iPhone OS or start the Linux console. The file to install the OpeniBoot can only be run on Linux or Mac. But there will be a package for Windows users soon.
You can see the video-demonstration here:
Where to download QuickOiB: