iH8sn0w has updated iFaith to version 1.4 which brings support for saving SHSH blobs of iOS 5.0.x firmware as long as you are currently running that firmware on your iOS device, even if Apple is not signing it.
iH8Sn0w, a Toronto-based iPhone developer, released iFaith, a new SHSH blob dumper for all iOS devices which can save SHSH files of any firmware running on your device even if Apple is not signing it.