The iOS smart reset is able to skip firmware update if the device has already been factory reset. If device has been factory reset, the AES-256 encryption keys have been securely erased and all the previous user data has been rendered inaccessible.
The iOS smart reset is able to skip firmware update if the device has already been factory reset. If device has been factory reset, the AES-256 encryption keys have been securely erased and all the previous user data has been rendered inaccessible.