(For more resources on Ubuntu, see here.)
Jailbreaking an iPhone or iPad allows you to run unsigned code by unlocking the root account on the device. Simply, this allows you to install any software you like – without the restriction of having to be in the main Apple app store. Remember, jailbreaking is not SIM unlocking. Jailbreaking voids the Apple-supplied warranty.
The mass availability of jailbreaking for these devices allows developers to write apps without having to shell out Apple’s developer fees. Previously a one-off payment of $300 US, an “official” developer must now pay $100 US each year to keep the right to develop applications.
Arguably the most advanced jailbreak available now is called Spirit. Though unlike a few others, which can now hack iOS 4.0, Spirit differs in a few key features. Not only is Spirit the first to be able to jailbreak the iPad, but this jailbreak also allows an “untethered” jailbreak – you won’t have to plug it into a computer every boot to “keep” it jailbroken. Support for jailbreaking iOS 4.0 is coming soon for Spirit.
There are tutorials on jailbreaking using Spirit, like this one, but they generally skip over the fact that there’s a Linux version, and only talk about Windows and/or OS X.
A very simple process, you can now jailbreak the iPad very quickly thanks to excellent device support and drivers in Ubuntu. Please note that from now on, you should only plug in the device to iTunes 9 before 9.2, or better still, just use Rhythmbox or gtkpod to manage your library.
sudo apt-get install git
git clone
http://github.com/posixninja/spirit-linux.git
sudo apt-get install libimobiledevice-dev
cd spirit-linux
make
sudo apt-get install ifuse
./spirit
You’ll see output similar to this:
INFO: Retriving device list
INFO: Opening device
INFO: Creating lockdownd client
INFO: Starting AFC service
INFO: Sending files via AFC.INFO: Found version iPad1,1_3.2
INFO: Read igor/map.plist
INFO: Sending "install"
INFO: Sending "one.dylib"
INFO: Sending "freeze.tar.xz"
INFO: Sending "bg.jpg"
INFO: Sending files complete
INFO: Creating lockdownd client
INFO: Starting MobileBackup service
INFO: Beginning restore process
INFO: Read resources/overrides.plist
DEBUG: add_file
DEBUG: Data size 922:
DEBUG: add_file
DEBUG: Data size 0:
DEBUG: start_restore
DEBUG: Sending file
DEBUG: Sending file
INFO: Completed restore
INFO: Completed successfully
The device will reboot, and if all went well, you’ll see a new app called Cydia on the home screen. This is the app that allows you to install other apps.
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