How To Jailbreak Your iPhone on iOS 4.2 GM

Follow the instructions posted below to jailbreak iOS 4.2 GM release with Redsn0w 0.9.6b2.

NOTE: All iPhone unlockers MUST STAY AWAY from iOS 4.2 until new version of Ultrasn0w unlock is available.

Step 1:

Download iOS 4.2 & iOS 4.1 & Redsn0w 0.9.6b2 [Windows/ Mac] (required for Redsn0w 0.9.6b2) for your version of iOS device.

Step 2:

Update to iOS 4.2 firmware using the IPSW file you just downloaded via iTunes 10.1 Beta 2.

Step 3:

Start Redsn0w 0.9.6b2 and point it to iOS 4.1 (Final Version, NOT iOS 4.2) to proceed with the jailbreak.

Step 4:

Now select “Install Cydia” and click “Next”. Optionally (if available), you can also select any other option you like.

Step 5:

Now make sure your device is both OFF and PLUGGED IN to the computer before you click “Next”.

At this stage you will be presented with a screen where you will have to quickly hold “Power” button and then while holding the “Power” button, you will now have to hold “Home” button too. Now after few seconds release “Power” button but keep holding “Home” button until installation begins.