Update: The Absinthe A5 for Windows (absinthe-win-0.2.zip) has been finally released, and it is a much easier method to jailbreak your iPhone / iPad running iOS 5.0.1 than the tutorial below (which still works very well).
The Absinthe A5 is available at the time of writing only for MAC, but the last release version command line tools cinject_0.4.3.zip works on Windows as well. I prepared a tutorial (that might become obsolete once the official Windows tools are out) but still works very well if you know what you are doing. I was able to successfully jailbreak my iPad 2 using this method in about 5 minutes, and I’ll provide step by step instructions so you can jailbreak yours.
Step 0. Important!!! Set your iPad 2 / iPhone 4S as a new phone / tablet and restore firmware 5.0.1 on it. If you already started to configure it, run Settings app and select General > Reset > Erase All Content And Settings. Ensure that your iPad / iPhone is on, connected via USB to your PC and iTunes is not started. All other iTunes related process should be also stopped (Run Task Manager and make sure they are stopped). You might also need to turn off any antivirus app you have.
For this process, your iDevice should stay on the Home screen and ON. Disable screen protection and password, set to NEVER or anything more than 10 minutes Read More…