iPhone upgrade question

Discussion in 'iPhone Tips, Help and Troubleshooting' started by twizotte, Aug 25, 2010.

  1. twizotte macrumors newbie

    Oct 2, 2009
    I have an iPhone 3GS, 3.1.3. I need to upgrade it to 4.0 or over. But still need to maintain minimally a jailbreak.

    Is this possible? I've checked around. I've saved my SSH blobs but I believe that will only allow me back to 3.1.3.

    Ideas? I believe I am on the new bootrom. 5.12.01 Firmware.
  2. Corndog5595 macrumors 65816

    Jul 16, 2010

    Download the 4.0.1 firmware for your device and then hold down shift and press the restore button in iTunes. If you are on a mac, hold down the Option key and then press the Restore button.

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