How To Jailbreak iPhone 4, iPhone 3GS On iOS 4.2.1 Using Greenpois0n [Mac]
How To Jailbreak iPhone 4, iPhone 3GS On iOS 4.2.1 Using Greenpois0n [Mac]
Chronic Dev Team released greenpois0n to jailbreak iOS 4.2.1 for iPhone 4, iPhone 3GS, iPhone 3G, iPod Touch 4G,iPod Touch 3G and iPad.
In this guide, we will take you through
the step by step procedure to jailbreak your iPhone 4 or iPhone 3GS on
iOS 4.2.1 using greenpois0n.
the step by step procedure to jailbreak your iPhone 4 or iPhone 3GS on
iOS 4.2.1 using greenpois0n.
Here are some important points to note before you proceed:
Please note that jailbreaking your iPhone may void your warranty and hence proceed with caution and at your own risk.
This guide is meant for iPhone 4, iPhone 3GS users only.
Please note that this guide is only meant for Mac users as greenpois0n is currently available for Mac only. We will publish a guide for Windows as soon as the Windows version is released.
greenpois0n does NOT hactivate your iPhone, so your iPhone should be activated via iTunes first.
Do not forget to backup your iPhone before you proceed. You can refer to this post for instructions on how to backup your iPod Touch.
Please ensure you are running latest version of iTunes, iTunes 10.1 or later.
After the jailbreaking process is complete, do not forget to checkout our article on tips to keep your iPhone secure.
You can follow these step-by-step instructions to jailbreak your iPod Touch:
Go to http://www.greenpois0n.com/
and click on the Mac icon to download the latest version of
greenpois0n. If the greenpois0n site is down then you can checkout this mirror site. Note:
If you’ve downloaded it earlier, we would recommend you to delete the
older file and download it again to ensure you have the latest version
of greenpois0n.
Double click the greenpois0n zip file to extract the file and double click greenpois0n to launch the application.
Next connect your iPhone to the computer and power it off.
Then click on the Jailbreak button.
You will be prompted to put your iPhone in DFU mode. Greenpois0n will take you through the necessary steps.
Press and hold the Sleep/Wake button for 3 seconds.
Keep holding the Sleep/Wake button and also simultaneously also press and hold the Home button for 10 seconds.
You will then be prompted to release the Sleep/Wake button but continue holding the Home button.
Once the iPhone enters DFU mode, greenpois0n will start the jailbreaking process, but remember to keep holding the Home button.
Once the jailbreaking is complete, you will be prompted to release the Home button.
Click Complete button to close the application. You should see text in verbose mode scrolling on your iPhone’s screen.
Your iPhone will reboot. After it has rebooted, you’ll notice that
there is a new Loader application on your iPhone’s home screen.
Tap on it to launch it. Select Cydia and then tap on Install Cydia button.
After you have successfully installed Cydia, you can uninstall the Loader application as it is no longer required. Tap on the Options button and then Remove Loader.app button to uninstall it.
That’s it, your iPhone is successfully jailbroken and you should
see Cydia on the homescreen. Reboot your iPhone and launch Cydia to
install the latest updates.
Troubleshooting steps:
- If you had problems jailbreaking your iPhone when greenpois0n was released, please note that Chronic Dev Team has released greenpois0n RC5_2, which fixes various bugs including the issue where it used to get stuck at "Greenpois0n Initialized".
- If you don't see Cydia in the Loader app after launching it then you can install Cydia using Redsn0w 0.9.6 RC8 (download link). You should just tick Cydia from the list of options and don't use the Monte option.
- Greenpois0n recommends a clean restore so if the above steps don’t
work then you can try to restore your iPhone if you desperately want a jailbreak as it is not ideal.
As always, let us know how it goes and
if you have a tip that helped you jailbreak your iPhone using
greenpois0n successfully then do share it in the comments section below.
if you have a tip that helped you jailbreak your iPhone using
greenpois0n successfully then do share it in the comments section below.
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