Using this tutorial you will be able to untether jailbreak iOS 5.1.1 (5.0 9B206f and 5.0.2 9B830) running on Apple TV 2G. This tutorial uses Seas0nPass for Mac OS X or Windows.
UPDATE: Please, consider reading our Jailbreak & Unlock FAQ, especially if you have questions or troubles.
Step one
Make sure you're running the latest version of iTunes.
The iPhone Dev-Team has released updates to RedSn0w and PwnageTool that bring support for the iOS 5.1.1 untethered jailbreak.
RedSn0w 0.9.12b1 supports untethered iOS 5.1.1 jailbreak for all devices:
iPhone 3GS
iPhone 4
iPhone 4S
iPad 1
iPad 2
new iPad 3
iPod Touch 3G
iPod Touch 4G
PwnageTool 5.1.1 allows to create custom firmware and preserve modem version for unlock with ultrasn0w or Gevey. PwnageTool 5.1.1 supports all A4 devices:
iPhone 3GS
iPhone 4
iPad 1
iPod Touch 3G
iPod Touch 4G
Apple TV 2G
You can download RedSn0w 0.9.12b1 here and PwnageTool 5.1.1 here.
iOS 5.1.1 untethered jailbreak tutorial using Redsn0w is available here.
Take a look at the video from RedmondPie of the Chronic Dev-Team announcing Absinthe 2.0 at HITB:
For those who didn't follow the conference, or get caught up in the excitement that surrounded it, the 'one more thing' bomb-shell was related to the fact that the Dream Team used their presence at the security event to officially introduce the world to the v2.0 release of their one-click Absinthe jailbreak solution. After months of hard work and exploit finding, mixed with weeks of will-they-won't-they speculation, it turns out that they indeed did introduce us to Absinthe 2.0.
Our instructions how to jailbreak your device using Absinthe are available here.
Using this tutorial you will be able to create a custom firmware, untether jailbreak and unlock iOS 5.1.1 running on iPhone 4. This tutorial uses Sn0wBreeze 2.9.5 for Windows.
Sn0wBreeze will also preserve baseband version if you need carrier unlock.
Just like version 2.9.4 the new 2.9.5 version supports untethered jailbreak of A4 devices on iOS 5.1.1. Sn0wbreeze can be used to create a custom firmware with jailbreak and preserve iPhone modem (baseband) version for unlock.
Sn0wbreeze 2.9.5 supports iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G and Apple TV 2G. It does not work with A5 devices, like iPad 2, iPad 3 and iPhone 4S.
Using this tutorial you will be able to create a custom firmware, untether jailbreak and unlock iOS 5.1.1 running on iPhone 3GS. This tutorial uses Sn0wBreeze 2.9.5 for Windows.
Sn0wBreeze will also preserve baseband version if you need carrier unlock. It can also update your modem version to 06.15 if you need unlock and stuck with 05.14 or higher baseband. If you have new iPhone 3GS that was made after 28 week of 2011 upgrading modem will not help to unlock.
Chronic Dev Team released an update to untethered iOS 5.1.1 jailbreak utility - Absinthe 2.0.2. New version supports the latest iOS 5.1.1 9B208 firmware for iPhone 4 GSM. If you experience problems with previous versions - try 2.0.2
Don't Forget to Save Your iOS 5.1.1 SHSH Blobs to preserve the ability to do iOS 5.1.1 untethered jailbreak in the future. Apple might release updated iOS firmware soon to fix and disable the jailbreak. After next firmware release you will not be able to restore to 5.1.1 any more.
iH8Sn0w released Sn0wBreeze 2.9.4 with the ability to perform an untethered jailbreak of A4 devices on iOS 5.1.1. Sn0wbreeze can be used to create a custom firmware with jailbreak and preserve iPhone modem (baseband) version for unlock.
Sn0wbreeze 2.9.4 supports iPhone 3GS, iPhone 4, iPad 1, iPod Touch 3G, iPod Touch 4G and Apple TV 2G. It does not work with A5 devices, like iPad 2, iPad 3 and iPhone 4S.
Chronic Dev Team released an update to untethered iOS 5.1.1 jailbreak utility - Absinthe 2.0.1. If you experience problems with previous version - try 2.0.1