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An unofficial version of PwnageTool has just been released which allows you to jailbreak the recently released iOS 4.3 beta firmware. Currently, the jailbreak is supported on iPhone 4 only. Support for other devices will follow soon.

UPDATE 2: If the guide posted below didn’t work for you, follow the detailed step by step instructions posted here to jailbreak iPhone 4, iPad and iPod touch 4G on iOS 4.3 using PwnageTool bundles.

For those of you who don’t know, this version of PwnageTool uses Geohot’s bootrom-based Limera1n exploit which has already pwned all current iOS devices for life!

WARNING NOTE: (Advanced Users Only) This unofficial version of PwnageTool (with custom bundles) wont preserve your old baseband. If you rely on an unlock, stay away from this release. Proceed at your own risk only. We are not to be held responsible if you end up bricking your iPhone.

Follow the instructions below to jailbreak iPhone 4 on iOS 4.3 beta using PwnageTool:

1: First you need to install the latest version of iTunes.

2: Run iTunes and sync all the important data in your iPhone for backing up.

3: Now, download PwnageTool and iOS 4.3 beta for iPhone 4 (official Apple developers only). Place all these files on your desktop.

4: Run PwnageTool and make sure to run it in the “Expert mode”. then select your device:

PwnageTool 4.3 (4)

5: PwnageTool will ask you to “Browse for ISPW…” select iOS 4.3 beta, see the screenshot below:

PwnageTool 4.3 (1)

6: Now select “Build” to start creating custom 4.3 firmware file:

PwnageTool 4.3

7: Wait while PwnageTool creates the custom firmware for you. the custom created firmware will be jailbroken.

PwnageTool 4.3 (2)8: At this stage, you need to enter your device into DFU mode. To do this, pick your iOS device and press “Home” and “Power” buttons at once for 10 seconds. Then keep holding “home” button but release the “Power” button for another 10 seconds. PwnageTool will show a message (see the screenshot below) if your device enteres DFU mode successfully.

    PwnageTool 4.1 (3)

    9: Now start iTunes and open your iOS device. There you will see an option to Restore your iOS device. Hold “alt” key on Mac or “Shift” key on Windows and press the “Restore” button to browse for the custom downloaded 4.3 IPSW.

    Update iPhone 4 4.2.1 (4)

    10: iTunes will now automatically restore your iOS device with iOS 4.3 firmware. when done, your device will reboot and will be running iOS 4.3 beta.

    (iPhoneItalia)

    UPDATE 1: We are getting mixed reports on this. After personally trying it out, and with some explanation from iH8sn0w, it seems like some patches in the bundle are broken due to which you might get error while restoring the custom firmware in iTunes.

    iH8sn0w: @TaimurAsad Also, when PT says it successfully built. It doesn’t mean that the ipsw will work. Patches can always be faulty.

    Do let us know if it works for you.

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