These days we are waiting for Pod2g’s iOS 5.1.1 untethered jailbreak with Absinthe 2.0. So all of jailbreakers who plan to use the upcoming Absinthe 2.0 will update their iDevices to iOS 5.1.1. So it’s highly recommended to save SHSH blobs files for iOS 5.1.1.
Saving iOS 5.1.1 SHSH blobs will help you to downgrade to iOS 5.1.1 from any future (unjailbreakalbe) version of iOS to enjoy the untethered jailbreak. Notcom, the guy behind TinyUmbrella released TU 5.11.00 few days ago to support the latest version of iOS.
As a reminder, to save your SHSH blobs, simply connect your iDevice via USB to your computer, launch TinyUmbrella, and click the “Save SHSH” button.
Download TinyUmbrealla 5.11.00: