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iPhone iOS 4.2: Jailbreak and Unlock 3GS – PwnageTool Guide

While iPhone 4 owners currently sit and wait patiently for their unlock method, we have some good news for those of you with an iPhone 3GS who have updated to the iOS 4.2 beta for developers.

As reported from RedmondPie, you’ll be pleased to know that a full jailbreak and unlock method has been confirmed for iOS 4.2, but sadly only for iPhone 3GS users at the moment.

If you would like to try this out, you can jailbreak your handset using the old bootrom along with PwnageTool, and then unlock it afterwards using UltraSn0w. As usual, RedmondPie has compiled the easy to follow guidelines up on their website, along with some useful screenshots in case you get stuck at a particular stage.

If all goes well, you should have a jailbroken iPhone 3GS running iOS 4.2. For those waiting for the GreenPois0n release, it should be available very soon.

Let us know how you get on.

Written by Alan Ng

Alan has been working for Product-Reviews since 2009 and became the Editor-in-chief in 2014. He has a passion for technology, the latest mobile phones and gadgets, and the gaming industry. Alan is a graduate of Canterbury Christ Church University and completed a B.A in Commercial Music in 2008. While expressing a keen interest in all areas that PR cover, you'll usually find Alan in the gaming section, where he'll be keeping enthusiasts up to date on all the latest news and reviews for consoles and PC.

Contact Alan Ng: alan@product-reviews.net

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Mike
Mike

I have been trying greenpois0n all day it does nothing the screen just stays on try again, this is in the tethered mode, I have 3g with 4.2

Mike
Mike

Will it work with bb 0.615

eeehabt
eeehabt

Greenpois0n doesn't work right. Baseband 5.14.02 is still the problem. Why upgrade to 4.2 if the phone will still be locked!!!!

Ron
Ron

greenpois0n is on live at greenpois0n.com

mark
mark

I just started looking into this tonight and everywhere I read said not to try it on a 3Gs…

zholy
zholy

Yup sounds to good to be true, maybe just a bluff by the dev team to see how much money apple can give them. Nothing like this should be done for free. But I will wait like everyone else for it to jailbreak my iPod touch 4.and I found a free ipod video converter for Aneesoft.Complete free!!!really…

lokienloki
lokienloki

Here we go again. Actually, this is just a SDK version. Who knows who, what would happen if you do it in your 3GS. Hence, it was proven that all iOS version cripples iDevices without any A4 chip — So I wouldn't recommend this JB lower than iPhone 4 model. iOS 4.2 Latest Must-Have Updates

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