Upgrading 3G to 4

Discussion in 'iPhone' started by joephish, Jun 23, 2010.

  1. joephish macrumors member

    Jul 7, 2003
    Hey guys,

    I'm just syncing/backing up my iPhone 3G in preparation for the iPhone 4, so I can switch nice and quickly :)

    Does anyone know if I have to upgrade my 3G to iOS4 first? Given the number of features that don't work on it, and given I'm only going to have this phone for another 24-48 hours, and given the amount of time it will take, it seems unnecessary.

    However, I don't want to tell my iPhone 4 to restore from the backup, and have it tell me it doesn't want to because it's from an old OS (or even worse, attempt to put iPhone OS 3 on it!)

    Thanks :)
  2. appleguy123 macrumors 604


    Apr 1, 2009
    15 minutes in the future
    You don't have to upgrade to iOS 4 first. I have not updated my 2g 3g or 3gs before I restore the backups in the new iPhone.

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