I couldn't find a clear answer on how to do this but I have a Iphone 4S with 5.0.1. I backed up my SHSH blob with Tiny Umbrella and Cydia. I was wondering how I can restore back my Iphone 4S back to 5.0.1 and keep my baseband the way it is, so that I can unlock it. Can I use the latest Redsn0w to get this done? I read that the new version will force my phone to upgrade to 5.1.1, which will upgrade the baseband, and then roll back the OS to 5.0.1. Is there any way to save my current baseband and restore back the OS to 5.0.1? Thanks!