Prerequisites:
- the 4.3 or 4.3.1 or 4.3.2 or 4.3.3 IPSW firmware file for your device (if your iPhone is on 4.3.1, then get the 4.3.1 IPSW; if your iPhone is on 4.3, then get the 4.3 IPSW, etc.)
You can get this from the PwnMyI Firmware Guide
- an un-jailbroken iPhone 3GS/4 on iOS 4.3 or 4.3.1 or 4.3.2 or 4.3.3
- the latest version of iTunes installed
How to Jailbreak:
1. Download Redsn0w 0.9.6rc16.
Download: Redsn0w 0.9.6rc16
20700 downloads
2. Extract the archive that you just downloaded and run redsn0w.exe.
3. Click Browse and locate the iOS 4.3/4.3.1/4.3.2/4.3.3 IPSW that you downloaded earlier.
4. Redsn0w will verify that the IPSW is valid. Once this is done, click Next. Redsn0w will now prepare some data required for the jailbreak.
5. You will now be shown the jailbreak options. Make sure that Install Cydia is checked. Click Next.
6. Make sure your iPhone is off and plugged into your computer. Click Next.
7. Follow the on-screen instructions to put your iPhone into DFU mode. Once your iPhone is in DFU mode, your screen will be black. Once you have successfully put your iPhone into DFU mode, Redsn0w will begin the jailbreak.
8. Redsn0w will upload the jailbreak data to your iPhone. Once Redsn0w is done, you may close Redsn0w by clicking Finish. You will see some text and images appear on your iPhone’s screen while the jailbreak is performed. Once your iPhone has rebooted, you are jailbroken!







