iFaith is a program that can save the SHSH blobs of the current version of iOS that's running on your jailbroken iPhone. It will work any version of iOS, whether or not that version is still signed by Apple. Saving your SHSH blobs allows you to restore your device to the saved version of iOS at anytime, even when Apple has stopped approving restores to that version. iFaith will create a pre-signed IPSW (iPhone Software) file with your saved SHSH blobs, which you can restore your iPhone to. Supported devices: iPhone 3G[S], iPhone 4, iPod Touch 3G, iPod Touch 4, iPad 1G, Apple TV 2