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Comment Re:My phone is getting slower and slower - you? (Score 1) 298

No, it is not possible. Each restore has to be signed by Apple before the phone will accept it, and they only sign the latest version. You can use a program called TinyUmbrella to store the signature and later go back to an old version (or if your phone has ever been jailbroken it might be stored on the Cydia servers). But if you don't have this info stored, there is no way to go back.

Chemist who falls in acid will be tripping for weeks.