Just a quick heads-up: notcom updated Tinyumbrella with iOS5 support. Even though there is still no working solution for restoring 5.x on iPhone 4S, notcom released a 5.01.00 so you can at least save 5.0.1 SHSH. He added tentative support for at least saving 5.0.1 SHSHs for iPhone 4S but as of now we are unable to use them fully.
You can download the new version of TinyUmbrella for Mac and Windows here…