iH8sn0w, the man behind the apps sn0wbreeze si F0recast made another utility with which you can save SHSHfor firmwarethe installed by you, SHSH-s that will then help you to restore to the respective software version, in case you do not have them saved in Cydia.
The need to save files SHSH it is limited only to the possessors of iPhone 3GS/iPod Touch 3G which can only restore to the current version of firmware if they don't have SHSH-s, and if they have them saved in Cydia they can restore to the firmware version for which they were saved SHSHthe Tutorial to restore to iPhone 3GS using SHSHfrom the Cydia find here, its application iH8sn0w unfortunately it will require the use of another named utility umbrella which involves going through a rather complicated process, after which you will be able to restore to the version of firmware for which you have SHSHCPCs.
iH8sn0w he has not yet given a name to the application, but he will do so in the following days, after which he will launch it. The application captures the files SHSH when the phone is in Recovery Mode, so it should not require a complete restore.
