iPhone upgrade question

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

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  1. twizotte, Aug 25, 2010

    twizotte macrumors newbie

    Joined:
    Oct 2, 2009
    #1
    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.
     
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  2. Corndog5595, Aug 25, 2010

    Corndog5595 macrumors 65816

    Joined:
    Jul 16, 2010
    #2
    http://www.felixbruns.de/iPod/firmware/

    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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