How come ios 5.1.1 is not showing on the saved SHSH in tinyumbrella?

I have an iphone 4 and i'm trying to downgrade my device from 6.1.3 to 5.1.1. I used tinyumbrella 6.14v and when i hit the "save shsh" button. It only showed 6.1.3 which is my current ios. I made sure the Request shsh from cydia is unchecked. How do I make 5.1.1 show up so i can downgrade to it using redsnow? Any help would be appreciated since i'm really desperate and frustrated.

You can only save SHSH blobs of your current iOS version. You can only downgrade to versions that you have SHSH blobs available for