Geohot had released Limera1n yesterday that can jailbreak iPhone 3GS, iPhone 4,  iPad, iPod Touch 3G  and the new iPod Touch 4G.

The purpose of this guide is to provide you step by step instructions to jailbreak iPod Touch 3G and iPod Touch 4G using limera1n.

iPhone 4 and iPhone 3GS users can checkout this step-by-step guide to jailbreak their iDevice.

Here are some important points to note before you proceed.

• This guide is ONLY for iPod Touch 3G and iPod Touch 4G users. iPhone 4 and iPhone 3GS users can use this step by step guide to jailbreak their iPhone using limera1n. iPhone 3G and iPod Touch 2G users can use Redsn0w to jailbreak their iPod Touch.

• Please note that jailbreaking your iPod Touch may void its warranty and hence proceed with caution.

• Do not forget to backup your iPod Touch before you proceed. You can refer to this post for instructions on how to backup your iPod Touch.

• Though limera1n supports iOS 4, iOS 4.0.1, iOS 4.0.2 and iOS 4.1, you can update it to iOS 4.1 and then jailbreak it using limera1n.

• Limera1n is currently available for Windows, Geohot plans to release the Mac and Linux versions of limera1n soon.

• After the jailbreaking process is complete, do not forget to checkout our article on tips to keep your iPod Touch secure.

• Please ensure you are running iTunes 9.2 or later.

Step 1: Download the latest version of limera1n from this link and save the application on your desktop.

Step 2: Double click on the limera1n exe to launch the application.

Step 3: Please ensure that your iPod Touch is connected to the computer.

Step 4: Click on the "make it rain” button.

Step 5: You will see that limera1n puts your iPod Touch in recovery mode. Immediately after this, follow the instructions.

Step 6: Limera1n will be prompt you to press both the home and power buttons.

Step 7: Limera1n will be then prompt you to release the Power button. Continue to press the home button.

Step 8: You will see that limera1n has put your iPod Touch in DFU mode. Continue to press the home button.

Step 9: While limera1n performs the exploit, you will see the limera1n logo on your iPod Touch.

Step 10: When limera1n has successfully jailbroken your iPod Touch, you will see “done” and get the following message.

Step 11: You need to restart your iPod Touch. You will notice that there is a new app called limera1n installed on your iPod Touch.

Step 12: Launch the limera1n app to install Cydia on your iPod Touch. Select Cydia and tap on the Install button to download and install it.

Step 13: After Cydia has been installed, reboot your iPod Touch.

Step 14: You should find Cydia on your iPod Touch’s homescreen. If you want you can launch the limera1n app to uninstall it.

Hope this helped. Please don't forget to drop us a line to tell us how it goes.