Iphone 3G baseband unlock without Sim Card

Discussion in 'Jailbreaks and iOS Hacks' started by icehell, May 4, 2011.

  1. icehell macrumors newbie

    Joined:
    Apr 12, 2011
    #1
    Hello Guys:cool:

    I bought Iphone 3G from Ebay locked to At&t and i live in Europe so i can not find At&t to activate it.

    Now i want to know how can i unlock it and how to know BB modem.

    Note: i did not receive it yet.
     
  2. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #2
    You do need to know what firmware currently on the phone so you can jailbreak it. Since you don't know what firmware on it and you do not want to upgrade/restore it to the latest firmware which is 4.2.1 because if you do, the baseband will also upgrade and therefore you can't unlock unless you go with the ipad baseband.

    So, here is what you can do;

    1. Download 3G 3.1.2 firmware to your PC.
    2. Download redsn0w 0.9.4 to your PC
    3. Restore your Iphone to 3.1.2 firmware.
    4. Jailbreak/hactivate it with redsn0w and it will bring your phone to home screen.
    5. Once your phone is at home screen. Go to Setting/General/about and find out what "modem firmware" you have on the phone.

    From there, we can guide you to the next step on how to unlock your phone.
     
  3. icehell thread starter macrumors newbie

    Joined:
    Apr 12, 2011
    #3
    The firmware Version: 4.2.1
    Model: MB702LL
    but the baseband version not provided buy the seller:eek:
     
  4. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #4
    Use redsn0w to jailbreak it, then you can find out the baseband. Most likely, you will have the 05.16 baseband which can't be unlocked it.

    Here is the link on how to jailbreak your phone;

    http://iclarified.com/entry/index.php?enid=12949
     
  5. icehell thread starter macrumors newbie

    Joined:
    Apr 12, 2011
    #5
    Thanks Man

    upgrade baseband to 06.15.00 then jailbreak then unlock
    Or
    customized snowbreeze firmware and unlock same time

    Or what do you think!
     
  6. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #6
    Use redsn0w to jailbreak it. When you run redsn0w, it has the option for you to install the ipad baseband. You can click on it and it will jailbreak and install ipad baseband onto your phone at the same time.

    Just to make sure you have Ipad 1 3.2.2 firmware on your computer so redsn0w can do its job.
     

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