Tried updating to ios 6

In the early days you could downgrade your i OS device to any firmware version you wanted to and not run into many troubles.This is because firmware restores never had to be approved by Apple, but starting from i OS 3.0 onwards Apple implemented a technology called You see, when you restore your i Phone, i Pod Touch or i Pad through i Tunes your device phones home and ensures that it is allowed to be restored to a specific firmware version.

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.The only exception to this is that i Pad 2 owners with any saved i OS 4 firmware generation SHSH blobs can downgrade to to any firmware that they also have saved SHSH blobs for.Downgrading devices with the A5, A5X and A6 chip on the i OS 6 firmware generation is not possible at this time.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.

Sometimes Cydia doesn’t back up your SHSH blobs on your Jailbroken device however, and you might even prefer to do a local backup of your SHSH blobs.If you try to restore to a lower firmware version, you will get an error because Apple is not signing that specific firmware version anymore.What is happening is Apple refuses to generate the new hash during the downgrade, meaning the new SHSH blobs cannot be generated.Newer devices like the i Pad 2, i Pad 3, i Phone 4S, i Phone 5 and i Pod Touch 5G has different restrictions however, because they are not vulnerable to the limera1n exploit and are governed more-so by APTickets.These devices can only be downgraded on the i OS 5 firmware generation and require saved SHSH blobs and APTickets for the i OS 5 firmware version you are currently running and are trying to get to.Whenever you upgrade or downgrade your i Phone, i Pod Touch or i Pad, new SHSH blobs have to be generated because one of the parts to the SHSH formula is the firmware version.