The iPhone Dev Team has updated PwnageTool, redsn0w, ultrasn0w, and cinject to support an untethered jailbreak under iOS 5.1.1. If you've already jailbroken with Absinthe and aren't having any issues, you can stay where you are. But if you ran into issues with Absinthe or need to unlock and maintain your baseband, these updates are for you.
The PwnageTool update will allow unlockers to update to iOS 5.1.1 without updating their baseband and losing their unlock. So if you depend on ultrasn0w for an unlock, you can use PwnageTool in order to upgrade safely now. PwnageTool will also support an untethered jailbreak on the Apple TV 2.
redsn0w has been updated to version 0.9.12b1 and supports all A4 devices, meaning the iPhone 4, and earlier. So again, if you had issues using Absinthe on your iPhone 4 or earlier device, I'd recommend giving redsn0w a try.
Cinject includes some compatibility updates and bug fixes over the 0.5.3 version but no major changes.
ultrasn0w 1.2.7 will allow you to unlock your iPhone after jailbreaking and updating with PwnageTool 5.1.1 assuming you have an eligible baseband. Once you're done updating just run the ultrasn0w package from Cydia to unlock.
If you're not sure whether or not your device can be jailbroken, how to jailbreak, or need to grab the download links for any of these tools, you can do so via the links below.
Source: iPhone Dev Team
iMore senior editor from 2011 to 2015.
Not going near redsn0w cuz it caused my phone to constantly crash in my last jailbreak and forced me to update to 5.1. Im happy with Absinthe right now.
more than likely operator error/
i just jailbreak my iphone 4s,now it has no network service, pls help
i did the absinthe jb on my I4 last night and it seems good. I did it on the 206 version tho, not 208.
i also used the absinthe to jailbreak my iphone 4s,though the jailbreak works but i lost my network connection, pls help
Im using iPhone 4 with iOS 5.1.1 and I wish to jailbreak to enable the Siri. Anyone can help me?
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