Can I just "Update" to official 4.2.1 over my existing 4.0 JB?

Discussion in 'Jailbreaks and iOS Hacks' started by SirDarren, Nov 27, 2010.

  1. SirDarren macrumors member

    Sep 10, 2009
    I've got a 3GS running a 4.0 JB, however it's starting to get a little slow and I want to update to 4.2 since Find My iPhone is now free, and the only reason I have for JB anymore is SBSettings but I'm sure I could live without that.

    So can I just update to 4.2.1 in iTunes, or do I need to "restore" first and then update?

    Thanks for any help! :)
  2. MikePA macrumors 68020


    Aug 17, 2008
  3. SirDarren thread starter macrumors member

    Sep 10, 2009
    Thank you.
  4. phillipsteak macrumors member

    Mar 28, 2008
    find my iphone isnt free for iphone 3gs, only for iphone 4, ipod touch 4th gen and ipads
  5. California King macrumors 65816

    Sep 20, 2007
    lol, poor guy, I hope he read this before upgrading :D
  6. Maverick1337 macrumors 65816


    Nov 4, 2008
    ROFL, I can't wait until he comes back onto the forums asking why Find My iPhone doesn't work for 3GS.
  7. SirDarren thread starter macrumors member

    Sep 10, 2009
    Actually, yes it is free. :rolleyes:

    If you read the footnote on this page you'll find you only need to create the account on a newest generation device, then you can use it on any other device running 4.2.

    I created my account on an iPhone 4 and right now I have free Find My iPhone on my 3GS! ;)

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