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CallingAllGeeks

How to untethered Jailbreak iOS 4.2.1 using GreenpoisOn Beta 4 [Windows]

How to untethered Jailbreak iOS 4.2.1 using GreenpoisOn Beta 4 [Windows]

We have already shared how to jailbreak and unlock iOS 4.2.1 on Mac using greenpois0n and here is quick tutorial on how to Jailbreak unlocked iPhone running iOS 4.2.1.

Greenpoison rc5 beta 4 will let you get an untethered jailbreak. You can download the latest version of GreenpoisOn here.

Step by step guide to Jailbreak iOS 4.2.1

  • Download and open GreenpoisOn
  • Switch off your iPhone and connect to your computer

greenposison1

Click on prepare to Jailbreak and get into DFU mode by following onscreen instruction. Once you followed the instruction carefully to get into DFU mode, your phone will get into DFU mode and click on jailbreak.

2-10-2011 2-42-41 AM Now just sit and relax. Your phone will show greenpoisOn animated icon after some time and it will reboot. Once your phone will reboot, open loaded and install cydia.

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Install cydia and follow our earlier tutorial on how to Install Installous using Cydia. Not to forget Installous is updated to V4 with many extra features.

Now sync your iPhone and enjoy jailbroken app on Jailbroken iOS 4.2.1. Do let us know if you have any question regarding jailbreaking our iPhone.

Article by Harsh Agrawal

Harsh has written 178 articles.

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