Downgrade question regarding 4.0.1

Discussion in 'Jailbreaks and iOS Hacks' started by AE92AFP, Jul 28, 2010.

  1. AE92AFP macrumors newbie

    Jul 28, 2010
    Quick question. I had my 3gs serviced and hoped to receive a replacement with 3.2, however I received 4.0.1. How can I downgrade, if possible, to a OS that is JB and unlockable.


    ps. love the board, been an avid reader, just never posted :)
  2. thelatinist macrumors 603


    Aug 15, 2009
    Connecticut, USA
    If the previous owner of your refurbished phone had his SHSH cached on Saurik's server, it will be possible for you to downgrade. You can find out by doing the following:

    1) Downloading a program called TinyUmbrella and extract the program file to your desktop or hard disk.

    2) Run the program.

    3) Check "Advanced Options."

    4) Select "iPhone 3.1.3 (7E1H)" from the Device/Version menu.

    5) Click "Save My SHSH."

    If you have your SHSH on file, you will see "SHSH SUCCESSFULLY saved!" in the Log.

    Otherwise, you will have to wait for a new tool to be released. One is expected within a week or so.

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