The following steps are for the iPhone 4 only using an Intel Mac. If you have a different device or use a Windows PC please go to the first page of the Jailbreak wizard.
The following instructions will jailbreak all iPhone 4 phones however you will not be able to unlock your iPhone if it has modem firmware version 02.10.x 03.10.x or 04.10.x you can confirm your modem firmware on your iPhone under settings->general->about
Download the following file using the Firefox Browser which can be downloaded fromwww.firefox.com
Download File 2: Apple Firmware used for preparing for the jailbreak
Click here to download
Note: Save the File do NOT select open in iTunes
Please now select one of the following options:
Option 1: Click here if you use your iPhone on its original network
Option 2: Click here if you do NOT use your iPhone on its original network.