Either your iDevice is unlocked already or you have plan to do that in future, this is recommended by Notcom to save BBTickets for iPhone 4S and iPhone 4 with the newly released TinyUmbrella v5.10.12.
This is not explained yet by Notcom whats the purpose behind to save iPhones’s BBTickets once again through TinyUmbrella v5.10.12, but surely they have some plan to use it to launch any new unlock or downgrading solution for iPhone.
So, download latest TinyUmbrella through links below.
Download TinyUmbrella v5.10.12 for Mac
Download TinyUmbrella v5.10.12 for Windows
How to Save SHSH Blobs with TinyUmbrella