Thursday, October 14, 2010

Guide to Jailbreak Apple iPhone iOS 4.1 (iPhone 4, 3GS, iPod touch 4G, iPad) with GreenPoison

Chronic Dev Team has finally released GreenPois0n to the world. You can use it to jailbreak iOS 4.1 on iPhone 4, iPhone 3GS, iPod touch 4G / 3G and iPad. Support for iPod touch 2G and Apple TV will be added soon.

The following instructions will help you jailbreak iOS 4.1 on iPhone 4 and iPhone 3GS using GreenPois0n.

NOTE: If you rely on an unlock, do not update to iOS 4.1 yet as doing so will upgrade your baseband, making it impossible for now to unlock. Either use TinyUmbrella to update to iOS 4.1 without update baseband (instructions here), or wait for PwnageTool which will help you cook custom firmware files for iOS 4.1 without the upgraded baseband.

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:
  • 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 4.1 !

Step 6: Now start “Loader” found on the homescreen and install Cydia:

This is it! You are done !

Unlock for iOS 4.1 (Old Baseband) There is currently no way to unlock your iPhone on the latest 05.14.02 / 2.10.04 basebands. If you have managed to preserve your baseband while upgrading to iOS 4.1 using TinyUmbrella, you can use the existing version of Ultrasn0w to unlock your iPhone on iOS 4.1. Step by step instructions for unlocking can be found here.

Download GreenPois0n for Windows
Download iOS 4.1 for iPhone 4, 3GS, iPod touch 4G / 3G
Download iOS 3.2.2 for iPad.

Ask your questions in comments section....


  1. Oooh, thank you. I'd been looking for this!

  2. Can't wait to jailbreak my iPhone tonight! Easy step-by-step instructions that anyone can follow. Thanks for sharing!

  3. Awesome... Thanks for sharing this.. I finally found the information that I really needed... Thanks

  4. Can't wait to jailbreak my iPhone tonight! Easy step-by-step instructions that anyone can follow. Thanks for sharing!

  5. I was trying to jail break & found your website. Excellent information, love you for making my day.

  6. This is a great news for everybody. Thanks for the guide. This article was really great and I hope I can learn more about new invented gadgets especially about new iPhone and iPod inventions. Nice post! Great Job!

  7. Now this is what I am talking about. It is a big help for me to see such a detailed instruction and things to do for jailbreaking. This is truly appreciated.I will be waiting for more of your posts. ^.^

  8. Good stuff. I have finally jail break my iPhone according to your step by step intruction. Thanks for your useful tips.

  9. I recently bought an iphone 3g with iOS 4.1 installed. I am very worried about its unlocking and jail-breaking. Looks like this guide is gonna help me a lot.thanks for sharing

  10. I am not that familiar to jailbreaking before. It was only then that I was able to learn about it when I bought my own iPhone lately. I should have read this post earlier. It could have been more easy for me to understand compared to the unrelated posts I saw on other websites.

  11. hi ! thanks for the guide. let me try it.