BigBoss has released iOS 5 semitethered jailbreak for iPhone, iPod Touch and iPad. According to BigBoss official blog:
“The semi-tethered jailbreak will allow you to reboot your iDevice, but with limited functionality. It is enough that you are no longer stranded, and you can use your phone, text, and many other features. This is just until you get access to Redsn0w again to “just boot tethered”. Once you do that, you’re back to fully functional state.
You can follow the steps below to perform semitethered iOS 5 jailbreak on iPhone 4, 3GS, iPod Touch 4G, 3G and iPad 1.
Jailbreak iOS 5 Semitethered on iPhone, iPod Touch and iPad
Download Redsn0w 0.9.9 b7 and jailbreak iOS 5 on iPhone, iPod Touch or iPad
Launch Cydia on your jailbroken iPhone, iPod Touch or iPad, and there tap on “Manage” tab
Tap “Sources” link, then tap on ”Edit” and “Add” button
To install Semitether app, add the following repository http://thebigboss.org/semitether, tap Add Source button
Install Semitether and your device will reboot
Launch Redsn0w on your computer, click Extras > Just boot button
Follow Redsn0w instructions to enter into DFU mode and your device will get reboot semitethered and that’s all