Friday, February 4, 2011

Breaking News : GreenPois0n RC5 Untethered Jailbreak for iOS 4.2.1 Released ! [How-to Video Guide]


Chronic Dev Team has finally released the much awaited GreenPois0n RC5which brings full untethered iOS 4.2.1 jailbreak for all iOS devices.
Unlike Redsn0w 0.9.7, GreenPois0n RC5 doesn’t require you to have SHSH blobs of 4.2b3 saved on Cydia. You can jailbreak any iOS device out of the box on iOS 4.2.1 using this latest version of GreenPois0n.

The following instructions will help you jailbreak iOS 4.2.1 on iPhone 4, 3GS, iPodtouch 2G/3G/4G, iPad and Apple TV 2G using GreenPois0n.
NOTE: If your iPhone 4 rely on an unlock, do not update to iOS 4.2.1 yet as doing so will upgrade your baseband, making it impossible for now to unlock.
Step 1: Download GreenPois0n from the link given below.
Step 2: Connect your iPhone via USB to your computer and click on “Prepare to Jailbreak (DFU)” as seen in the screenshot below.

Step 3: Now follow the following onscreen instructions to enter DFU mode:

  • Press and hold the sleep button for 2 seconds
  • Continue holding sleep; press and hold home for 10 seconds.
  • Release sleep button; continue holding home for 15 seconds.
Step 4: Your device is now ready for jailbreak. Click on “Jailbreak” to inject the exploit.

Step 5: Your iPhone, iPad or iPod touch should now be successfully jailbroken on iOS 4.2.1. Now start “Loader” found on the homescreen and install Cydia.

This is it! You are done !
UPDATE 1: Our complete step by step video guide is up!



1. Greenpois0n.com
2. http://t.co/iFUVi9U
3. http://mirrors.ih8sn0w.com/greenpois0n-osx_rc5.zip

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