TinyUmbrella saves the "SHSH blobs" of your Apple device (i.e. iPhone, iPod, or iPad), allowing you to bypass Apple's servers and downgrade your firmware through iTunes, whenever you want. Your device does NOT have to be jailbroken for TinyUmbrella to work.
It allows you to downgrade your iDevice so you can do the jailbreak. iOS firmware (to be downgraded to) can be downloaded from here. http://www.felixbruns.de/iPod/firmware/
redsn0w is a utility that will jailbreak your iPhone or iPod Touch, allowing it to run apps that are not approved by Apple. r ...
iFaith is a program that can save the SHSH blobs of the current version of iOS that's running on your jailbroken iPhone. It wi ...
PkgBackup is a backup application for jailbroken iPhones that backs up & restores all of your Cydia apps, your Cydia sourc ...
iSHSHit allows you to backup your SHSH blobs from Apple directly on your iDevice for later downgrading. It automatically uses ...