After RedSn0w 0.9.11b1, the new updated RedSn0w 0.9.12b1 is here. You heard it right. The popular jailbreaking application, RedSn0w, is back with support for the latest untethered jailbreak for all devices running iOS 5.1.1 in the new version.
RedSn0w will now jailbreak the iPad, iPad 2, the new iPad, iPhone 3GS, iPhone 4, iPhone 4S, 4th Generation iPod Touch and 3rd Generation iPod Touch. The jailbreak implement is pod2g’s Rocky Racoon untethered jailbreak method that was released with the Absinthe jailbreak tool for iOS 5.1.1.
With RedSn0w being updated for the iOS 5.1.1 untethered jailbreak, Windows users can choose between three tools – Absinthe, Sn0wbreeze, or RedSn0w.
Mac users can choose between either Absinthe or RedSn0w. RedSn0w and Absinthe will jailbreak all of the iOS 5.1.1 devices with just one click of a button without the need to enter Device Firmware Upgrade (DFU) mode, while Sn0wbreeze will only jailbreak A4 and earlier devices with the need to create a custom firmware and then use pwned DFU mode to install the jailbreak.
Using the new ReSsn0w, A4 and earlier iOS devices can have the Rocky Racoon untethered jailbreak installed one of two ways. Either they should use backup method and restore method, just the way Absinthe installs it. Or, they can do it via ramdisk, a method explained by the iPhone Dev Team to be safer because it would not cause issues with iCloud later on:
Originally Posted by iPhone Dev Team
*backup/restore method similar to Absinthe and cinject
*its traditional limera1n-based ramdisk install. If you have a lot of media on your A4 device (music, movies, TV shows, etc), then the ramdisk method is preferrred because it avoids any possibility of later problems related to syncing to iCloud (including Photo Stream and Music Match). The ramdisk method is not available for A5 devices or later because limera1n can’t be used. If you’d like to use redsn0w’s ramdisk method, just be sure to put the A4 device in DFU or Recovery mode before starting redsn0w (otherwise it will immediately start to use the backup/restore method).
In addition to the updated jailbreak, RedSn0w also has support for people that took advantage of the SAM unlock. Now, the ramdisk can be infused with the SAM tickets that you were instructed to save for yourself if you have an iPhone 4 or earlier model. Or you can upload them after the jailbreak is complete on any iPhone model. RedSn0w can use either the raw activation ticket file, or the .zip file that it (RedSn0w) created to do this for you.
For your information, Ultrasn0w, cinject, and pwnagetool have all been updated to work with iOS 5.1.1 as well. All application downloads can be downloaded directly from Cydia on your jailbroken iOS device.