TinyUmbrella has recently received an update, adding support for iOS 5.1.1.
If you’ve already updated to the latest version of Apple’s mobile operating system but enjoy taking advantage of the occasional jailbreak tweak, be sure to save your SHSH blobs under iOS 5.1.1. With these files saved, it’s possible to downgrade your iOS device’s firmware (to iOS 5.0.1) and take advantage of the untethered jailbreak solution developed by @pod2g. You can downgrade using redsn0w, which received an update adding this feature recently.
Saving the files is a quick and simple process, and something we urge all potential jailbreakers to do – especially if you’re rocking an iPhone 4S, which is currently un-jailbreakable under iOS 5.1.1.
For more information, head over to The Firmware Umbrella, where you can download the latest version of TinyUmbrella. Good luck!