Semaphore has released an update to TinyUmbrella that lets you save BBTickets for use 'later on...'

I'm pushing 5.10.11 for iPhone 4, iPhone 4s, and iPhone 4 CDMA users with functionality to save BBTickets for use later on...

The saving of your Baseband Ticket will presumably be important to those looking to unlock their device. When resaving your 5.1 SHSH blobs make sure you have selected Overwrite existing SHSH files on "Save SHSH" from the Advanced tab.