Cziriblog

Chronic Dev Team has finally released the much awaited GreenPois0n RC5 which 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, iPod touch 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 “Jailbreak”

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: GreenPois0n will now start “Jailbreaking” your iOS device untethered on 4.2.1

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 !

Download: http://greenpois0n.com/

Instead of releasing a tethered version (like Redsn0w 0.9.6) of GreenPois0n for iOS 4.2.1 jailbreak, members of Chronic Dev have decided to work on their own untethered solution for iOS 4.2.1 jailbreak, confirms Joshua Hill, one of the members of the team.





p0sixninja: A lot of people are saying another tethered jailbreak is pointless, I agree. Focusing on getting untethered before release

When asked if it is the same exploit as the one Comex has been working on, and whether or not it will require SHSH blobs for 4.2b3 like Redsn0w 0.9.7. Joshua said that they are working on their own untethered exploit, and that it will not require SHHS blobs for 4.2b3.

tahu363: @p0sixninja I assume you are talking about Greenpois0n? Are you implementing Musclenerd’s untether or do you have your own?

p0sixninja: @tahu363 we’re implementing our own

Capsfanchad: @p0sixninja I’m assuming "your own" will require 4.2b3 shsh? And thanks for your guys work!

p0sixninja: @Capsfanchad lol no

As usual, no ETA’s on release yet. It will be released when ready. Stay tuned as we will inform you as soon as it is available for download

iPhone developer Joshua Hill of the Chronic Dev Team has publicly confirmed that he is going to release an updated version of GreenPois0n with support for iOS 4.2.1 jailbreak as soon as he is done adding sandbox patches.



For those of you who don’t know, GreenPois0n is based on Geohot’s Limera1n bootrom exploit which has already pwned all current iOS devices for life. This release of GreenPois0n though will most likely be a tethered jailbreak, much like what Redsn0w 0.9.6b6 can already achieve.



This so called tethered or semi-tethered jailbreak however only applies to the new devices like: iPhone 3GS (new bootrom), iPhone 4, iPad, iPod touch 2G (MC Model), iPod touch 3G and the iPod touch 4G. Old devices like iPhone 3GS (old bootrom), iPhone 3G and iPod touch 2G (Non-MC Model) can be jailbroken-untethered right now using tools such as Redsn0w 0.9.6b6. For untethered jailbreak, you will have to use Redsn0w 0.9.7 which requires you to have SHSH blobs of iOS 4.2b3 saved.

If you don’t have SHSH blobs of iOS 4.2b3 saved, you will have to wait for Comex’s untethered jailbreak tool which is most likely going to be released after Apple releases the next iOS firmware.