What if you could run Linux iPad. Some developers have managed to make this open source operating system can run on hardware with a processor Apple iPad A4 which also used other IOS devices, which means besides the iPad will be able to walk well on the iPhone 4, iPod Touch and the 4th generation.
They have not explained how they managed it, but they plan to disclose further details in the future. Although maybe one or two more years before Apple makes the device current IOS to become obsolete with the latest version of their operating system, you can leverage your Apple device to install Linux.