How to Jailbreak IOS 4.2.1 with Redsn0w 0.9.6b4

Yesterday he was able to download and install iOS 4.2 to iPad, iPhone 3G, iPhone and iPod Touch 4 (least the first generation) thanks to the Dev-Team has had access to the beta of Apple, have been preparing the way for when was launched this version already could download the utility to jailbreak your phone with IOS 4.2.

The Dev-Team has released the latest version 4.2.1 compatible with IOS, which provides access to the IOS system and agree to install third party applications not signed by Apple in the App Store. That is, you can install Cydia on your iPad, iPhone or iPod Touch with your favorite applications.

You can download the version for OS X or Windows for direct download, but now their servers is very slow so if I were you seek a Torrent download faster. Installation is fairly simple, just need to have the file. Ipsw 4.2.1 IOS. In RedmonPie is a guide (you do not really need) indicating step by step. Remember to do the Jailbreak your gadget is a personal decision and all results will be at your own risk.

Redsn0w “iOS jailbreak 4.2.1”
As we told earlier this week, iOS 4.2 is available for iPad, iPhone and iPod, and obviously could not delay the release of their jailbreak for 4.2.1 iOS ideal for those who like to have control over their gadgets.

First of all I want to clarify that is the sole responsibility of those who dare to jailbreak any damages or problems that may come to bring their teams (remember, this is not “official” so it is in each I want or do not, and everyone is responsible for what it does to your phone.)

Now, clarified this point and for those who dare to do it, tell them that works with iPhone 4.2.1 iOS: iPhone 3G, iPhone 3G, iPhone 4, iPod Touch 2nd genenaciĆ³n, iPod touch 3rd generation, 4th generation iPod Touch, iPad iPad and 3G. I leave the video below step by step to make the iOS Jaibreak to 4.2.1

Minimum Requirements
Have iPhone, iPod Touch 4.2.1 or iPad iOS
Have firmware 4.2.1 download it from iTunes (updated to 4.2 and then to 4.2.1)
Having Redsn0w 0.9.6b4 download it for Windows or Mac
Learn the benefits of the jailbreak if you do not know comes here

Note remember to keep the SHSH or kept them to do well before the process (If you already saved it does not matter)

This jailbreak is compatible with the following devices

  • IPhone 3G unthetered;
  • IPhone 3G (iBoot old)
  • iPhone 4 tethered.
  • IPod Touch 2G (Model MB) unthetered;
  • IPod Touch 2g (MC) tethered.
  • IPod Touch 3g tethered.
  • IPod Touch 4 tethered.
  • IPad tethered.

If you do not know which is tethered and Untethered

You can Jailbreak and it works perfectly, except that each time you make a respring, and / or turn off your device has to hold with redsn0w again.

This is that you can jailbreak, but you can turn on and off your device without using Redsnow all.

Here the video tutorial about How to jailbreak iOS 4.2.1 with redsn0w.


  • i downloaded limera1n for my ipod touch and ran it followed all of the instruction’s and it didnt work

  • you will have to wait until jailbreak comes out.
    this will be untethered for the latest idevices.
    trust me it will be worth the wait.