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  1. Thread AuthorThread Author   #1  
    rockdaddy99's Avatar
    iPhone Nanite

    1 Posts
    Global Posts
    2 Global Posts

    Default Using 3g software update on a 2g iphone with Tmobile

    I unfortunately updated my 2g phone to the 3g OS but I have a tmobile sim card in the phone.
    It was working fine before, but now I'm getting a 'non supported sim card' error message when I connect it to my computer and launch Itunes and the phone only works in 'emergency' mode.

    Is there a fix for 3g OS on a 2g phone with tmobile?
    If not, how do I downgrade or uninstall and go back to the old OS?

  2. #2  
    joetdc's Avatar
    iPhone Nanite

    4 Posts


    I always use the AT&T sim then put the tmobile sim in after the unlock.
    Restore and try it tha way.
  3. #3  
    Savio's Avatar
    iPhone Newbie

    30 Posts
    Global Posts
    32 Global Posts


    You mean 3.0 firmware/OS right? Not 3G OS? Kind of two different things...
    Anyways, just use a program like QuickPwn or redsn0w to activate your phone (so that you can get past the slide to emergency screen) and unlock it as well.

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