Tried updating to ios 6
If you are Jailbroken then most of the times your SHSH blobs are already saved on Cydia’s server automatically and you shouldn’t have to back them up manually.
For the most part, older i OS devices with an A4 chip can be downgraded to any firmware version as long as you have saved SHSH blobs and APTickets.
This includes the i Phone 2G, i Phone 3G, i Phone 3GS, i Phone 4, i Pad 1G, i Pod Touch 1G, i Pod Touch 2G, i Pod Touch 3G and the i Pod Touch 4G.
To do this you can use tools like Tiny Umbrella (download) and i Faith (download).
It is important to keep in mind that these tools can even save the SHSH blobs of non-Jailbroken devices.
In the future APTickets will completely replace SHSH blobs, this will happen once the i Phone 4S stops being supported.
The good thing is there is indeed still a way to downgrade your i Phone, i Pod Touch, i Pad or even Apple TV, but it relies on you saving SHSH blobs.
Just like how Jailbreaking is becoming more and more difficult on newer Apple devices, so is downgrading.
As new exploits are constantly being found however, keep an eye on our list of how to guides shown below that will give you step-by-step instructions on how to downgrade your i Phone, i Pod Touch, i Pad or Apple TV to a lower firmware version.
Additionally, you will also learn the best way to save your SHSH blobs which will allow you to downgrade your i Phone, i Pad, i Pod Touch and Apple TV firmware version in the future.