How to update iPhone 4S from iOS 5.0.1 to 5.1.1 instead of iOS 6?
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Ron-R1 • November 16, 2012 at 4:33pm
I am currently using a jailbroken iPhone 4S running iOS 5.0.1. I want to update it to iOS 5.1.1, but I want to avoid updating to iOS 6. I have already downloaded the iOS 5.1.1 IPSW file. Can anyone explain the exact procedure to do this? Should I use iTunes for the update, or is it necessary to use a tool like Redsn0w even though I am performing an update rather than a restore?
Answers
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iClarified • January 12, 2026 at 3:47am
To update an iPhone 4S to a firmware version that Apple is no longer signing, such as iOS 5.1.1, you must have saved the SHSH blobs for that specific version and device. iTunes requires a digital signature from Apple to authorize a restore or update; since Apple has stopped signing iOS 5.1.1, iTunes will typically return an error. If you have your SHSH blobs saved, you can use a utility like Redsn0w to perform the update. You will need to select the iOS 5.1.1 IPSW and point the software to your saved blobs to create a stitched firmware or to use Redsn0w's built-in restore feature. If you do not have SHSH blobs for iOS 5.1.1 saved for your specific iPhone 4S, you will not be able to update to that version and will be forced to update to the latest signed iOS version.
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datumax • November 24, 2012 at 4:38pm
Unless you have saved your SHSH blobs for iOS 5.1.1, you cannot update to that firmware version because Apple has stopped signing it. iTunes requires verification from Apple servers to complete the installation. To manage blobs for future updates or restores, tools like TinyUmbrella or Redsn0w are typically used by the jailbreak community.