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Feb 4th, 2011, 9:47 am
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 relies 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. USE THIS INSTEAD: viewtopic.php?f=1047&t=166010

You will need:

Greenp0ison: http://www.greenpois0n.com/

Instructions:
Step 1: Download GreenPois0n from the above link and start it.

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 !

video: http://www.youtube.com/watch?feature=pl ... pBh94nGBps
Feb 4th, 2011, 9:47 am

MOBILISM.ORG
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Feb 4th, 2011, 8:37 pm
Does this require a clean 4.2.1 or can it be loaded up over the top of the Redsn0w version?
Feb 4th, 2011, 8:37 pm
Feb 4th, 2011, 10:36 pm
it must be clean OS.
Feb 4th, 2011, 10:36 pm

MOBILISM.ORG
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Feb 6th, 2011, 1:09 am
So the untethered version only works with macs?

Any green poison for Windows?
Feb 6th, 2011, 1:09 am

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Feb 6th, 2011, 5:00 am
GreenPoison for Windows is out. :D
Feb 6th, 2011, 5:00 am
Feb 6th, 2011, 9:11 am
My iphone 4 is a T-mobile registered, and not unlocked, I'm not so keen about unlocking it, but I want to jailbreak it, can I use the greanpoison untethered jailbreak, or will I loose my t-mobile connection if I do a jailbreak. Thanks.
Feb 6th, 2011, 9:11 am
Feb 6th, 2011, 9:21 am
True, windows is out since this morning. Post updated.
fisy: the jailbreak is not related to unlock. It will not do any damage to your T-mobile connection.
Feb 6th, 2011, 9:21 am

MOBILISM.ORG
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Feb 6th, 2011, 11:16 am
Thanks a lot.
Feb 6th, 2011, 11:16 am
Feb 6th, 2011, 11:20 am
Just someone wrote jailbreak upgrades baseband, and I thought tihs has something to do with carrier, like t-mobile.
Feb 6th, 2011, 11:20 am
Feb 6th, 2011, 12:04 pm
What if ios 4.3 comes out on 14.02. and you did the jailbreak? Do you have to cancel the upgrade, until a jaolbreak for ios 4.3 comes out?
Feb 6th, 2011, 12:04 pm
Feb 6th, 2011, 6:47 pm
usually the current jailbreak does only work for the current iOs (4.2.1)...
if you want to jailbreak your device, you should wait with the upgrade...
Feb 6th, 2011, 6:47 pm
Feb 6th, 2011, 7:43 pm
Thanks.
Feb 6th, 2011, 7:43 pm
Feb 7th, 2011, 9:38 am
They released greenP0ison now because the iOS 4.3 beta 3 has the bug that permited the jb to work patched. So, currently there is no jailbreak for 4.3. My suggestion is to jailbreak 4.2.1 and wait 1-2 months untill a jailbreak for 4.3 will be out.
Feb 7th, 2011, 9:38 am

MOBILISM.ORG
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SUPPORT DEVELOPERS. IF YOU LIKE IT, BUY IT.
Feb 7th, 2011, 9:38 pm
Hi,

I didn't see iPhone 3G on the devices list... is there a problem with it?
Feb 7th, 2011, 9:38 pm
Feb 7th, 2011, 9:47 pm
Hey guys,

I have just bought my iphone 4. It came with IOS 4.1 - firmware 02.10.04 - UNBLOCK

Do i have to update to 4.2.1 before do this jailbreak?

I have already tryed without update and the loader does not work.

awaiting
thanks
Feb 7th, 2011, 9:47 pm