Updated to 4.0 on mac

Discussion in 'iPhone' started by l3laze, May 17, 2010.

  1. l3laze macrumors newbie

    May 18, 2009
    Hey guys i used my bros mac book to update my phone no problemo! my question is because im a pc user can i just update from my pc now thats its 4.0?
  2. bob616 macrumors 6502

    Jul 12, 2008
    no. you need a mac every time, because the update file is stored in a .dmg which can only be opened by macs
  3. chenks macrumors 6502a


    Oct 23, 2007
    that's not the reason why.
    DMG files can be opened in windows using appropriate 3rd party tools (most of the ISO mounting apps can do DMG files just fine).
  4. geko29 macrumors 6502

    Nov 10, 2008
    I've tried unpacking the dmg file (on a mac, even) to get the ipsw, then doing the update on a PC (7 Enterprise x64), and it bricked the phone. The restore completed "successfully", but the phone wound up in DFU mode anyway. Works perfectly on the Mac every time.
  5. steezy1337 macrumors 6502

    Dec 29, 2008
    Carlisle, UK
    surely you could have just waited a month or so....
  6. thespazz macrumors 6502a

    Jul 5, 2007
    Not what the OP asked.

    You need a Mac to update because Apple has somehow prevented Windows users from updating. They've done something to the IPSW.

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