Jailbreaking your iPhone, iPod Touch or iPad allows developers to access API’s that Apple traditionally does not allow them to access (Apple has strict rules/policies). Due to Apple’s select policies, developers went underground with the launch of the Cydia Store. The following guide will show you how to jailbreak your iDevice.
How to Jailbreak your iPhone, iPod Touch or iPad
First, no matter what device you have, you’ll want to sync your phone with iTunes to make sure all of your data is backed up.
Perform the following actions based on your application below.
If you own an iPhone 3G, 3GS, 4 or iPod Touch (1Gen, 2Gen, 3Gen or 4Gen) with iOS 4.1 installed or if you own an iPad (WiFi and WiFi+3G owners) with iOS 3.2.2 installed: Download the latest jailbreak file from www.limera1n.com.
If you own an iPhone 3G, 3GS, 4 or iPod Touch (1Gen, 2Gen, 3Gen or 4Gen) with iOS 3.1.2, 3.1.3, 4.0, 4.0.1 installed or an iPad (WiFi and WiFi+3G owners) with iOS 3.2 or 3.2.1 installed: Download the latest jailbreak file from www.Jailbreakme.com. Users can jailbreak their phones instantly by sending their browsers directly to the jailbreakme site and successfully load the page (it’s a browser-based application). If you are confused, check out their FAQ.
Once you’ve downloaded your jailbreak file, the iDevice will restart. You can then launch the Cydia app (which will restart again), and install your desired applications through Cydia*.
**If you want to perform FaceTime calls over 3G on an iPhone 4 or 4G iPod Touch. You will need to jailbreak your device in order to do so.