Feeling nostalgic? Own an iPad 2 or a iPhone 4s? Then you\'ve got the chance to travel go into reverse memory lane and downgrade your device from any firmware back to iOS 6.1.3—no SHSH blobs needed.
Entitled odysseus OTA, the command line tool takes advantage of the actual fact that Apple continues to sign the OTA (over the air) firmwares for iOS 6.1.3 on the iPad 2 and iPhone 4s. need to ascertain the downgrade in action? Then watch this elaborate stepwise video.
The downgrade technique is that the work of developer tihmstar, with further credit aiming to winocm (kloader), xerub (odysseus), and iH8sn0w (consulting) among others.
Obviously this downgrade technique can have very restricted use-case situations, because it is strictly restricted to the said firmware/hardware combos. Nevertheless, it\'s a powerful (no SHSH blobs needed!) accomplishment, once you take into account how troublesome Apple makes it to downgrade firmware recently.