TinyUmbrella got an update, a new version has been released to save SHSH blobs for iPhone 4S on iOS 5.0.1 second build (9A406). As we posted earlier that a untethered jailbreak for iPhone 4S and iPad2 may be released in the next week, so, it would be better for you to save the SHSH blobs for this built.
So, Download the TinyUmbrella from the links given below and save SHSH blobs for iPhone 4S for iOS 5.0.1 Build 2 (9A406)
Download TinyUmbrella for Windows
Download TinyUmbrella for Mac OSx