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Odysseus
Odysseus
Odysseus is a tool by @xerub to downgrade/upgrade/restore specific 32 bit A4+ devices to specific firmwares. This method only works if you are jailbroken and have valid SHSH Blobs and a valid APTicket.
How it works
It uses a tool by @winocm called kloader. kloader is a CLI that you can run on an iOS device which loads an (decrypted) image. It allows you to bootstrap a pwned iBSS and then initiate a restore using iDeviceRestore with a custom iPSW, which allows you to downgrade/upgrade/restore to the firmware of your choice.
