Tried updating to ios 6
Once you have your SHSH blobs signed, as stated previously, if you upgrade to a new firmware version and decide you don’t like it you can downgrade back to the firmware version which you have saved SHSH blobs for.There is unfortunately some restrictions that need to be kept in mind though.If you are looking for more information on how to save SHSH blobs and APTickets you will want to visit our How To Save SHSH Blobs section.Note: Keep in mind that if you find a guide for a previous firmware version and don’t see one for your current situation, most of the time these guides are all-purpose.
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.
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.
In order to prevent firmware restores Apple only signs one firmware version at a time, which is obviously the latest firmware version available.
In case this wasn’t a big enough limitation to downgrading i OS devices, in the i OS 5 firmware generation Apple introduced yet another technology to prevent downgrading called APTickets.
What APTickets are is essentially the next generation of SHSH blobs.