Update: Fixed issues when dumping blobs on an iPhone3,2 (thanks to @airship17 for helping me debug!)
iFaith can save SHSH blobs for any old iOS firmware currently installed on iPhone, iPad or iPod Touch. You can download iFaith SHSH blobs dumping tool for Windows from below.
In this section you will learn how to downgrade your iPhone, iPod Touch, iPad and Apple TV 2G to a lower or currently firmware version running without 3194 or 16xx errors. Additionally, you will also learn the best way to save your iFaith which will allow you to downgrade your iDevice’s firmware version in the future.Also you will learn how create a pre-jailbroken custom firmware without baseband upgrading . This is not for A5 device.