Shift + Click on 'Update' button in iTunes?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by mi986, Jul 23, 2010.

  1. macrumors member

    Joined:
    Jul 29, 2008
    Location:
    Victoria, Australia
    #1
    I know you can Shift + Click on the 'Restore' button in iTunes to restore with a specific .IPSW, but can you do the same with the 'Update' button?

    I want to upgrade an iPhone 3GS on 3.1.3 to 4.0 but I don't want to lose any of the data on it. I have downloaded the 4.0 firmware elsewhere (because my internet is really slow) and want to update using this computer.

    Will this work?
     
  2. macrumors regular

    Joined:
    Jul 28, 2009
    #2
    Sync your 3GS and let it run a full backup and snc then shift+restore
     
  3. macrumors 6502a

    Joined:
    Jun 20, 2010
    #3
    If the firmware update wipes the phone clean then just restore back and it will all come back to how you had it plus the new firmware installed.
     

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