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.
Here is all you need before see the video :
Watche the video How To Downgrade iOS 5.0.1 to iOS 5,4 Custom Firmware Using iFaith without Baseband update :