Tried updating to ios 6
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.
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.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.In order to enforce this limitation SHSH blobs were introduced, which is a hash signature system.Although this is getting technical, an SHSH is created by an SHSH formula with 3 or 4 TSS keys (say with me).
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In the early days you could downgrade your i OS device to any firmware version you wanted to and not run into many troubles.