WOW!
06/13/2012 18:22:17.473 APPLE is NOT signing AppleTV2 5.1.1 (9B206f) SHSH requests anymore. All you can do now is select CYDIA and hope that CYDIA has your SHSH saved. If not, there is nothing you can do.
That was fast apple. They are not signing anymore.
I am on the latest firmware 5.0.2. It says I am up to date on Apple TV. I run TU, it recognize it, but I cannot save anything.