Downgrade to iOS 8.1.2 from iOS 8.1.2 With Backup

  • Brian

    Iphone 5s, A1457 GSM running ios 8 unable to downgrade to ios iOS 8.1.1.2.1 or iOS 8.1.1.2.1
    Error message of ”firmware file not compatible”

    Have tried both GSM and CDMA versions with no luck in both DFU mode and normal mode.
    Any ideas?

    • Michael Edward

      Do you have iOS 8.1.1.2.1 backup?

      • Brian

        Yes, tried to backup directly, as in just restore from backup, got told it would just restore settings etc but not the firmware



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