As the next iOS 5.1 release is expected in near feature so that it is recommended by Notcom that users who belongs to jailbreak community must save SHSH blobs for iOS 5.0.1, because with the release of new iOS update it would not be possible to save SHSH blobs for old iOS version.
How to Save SHSH Blobs with TinyUmbrella
Save SHSH Blobs with iFaith
According to official blog:
“With the quiet time between jailbreak and iOS version, make sure you get your SHSHs saved. I’ve been working on the TinyUmbrella rewrite (albeit sparingly due to real life demands). It’s important to make [...]