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Thread: Invalid Sim-3gs and T-mobile

  1. #1
    Default Invalid Sim-3gs and T-mobile
    Newbie to the unlock process and having issues with a jailbroken and unlocked 3gs version 4.3.5, firmware 06.15.00. I can't get the phone to recognize the sim card. I install it and get an invalid sim error. I've turned off 3g and reloaded ultrasn0w to no avail. Wanted to see if there is anything else to try before I return to the seller. Thanks

  2. #2
    Livin the iPhone Life
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    If you can return it, that's best. Let the seller get it working with your sim.

  3. #3
    Retired Moderator iYeow's Avatar
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    Ultrasn0w will not unlock at 4.3 4 or 4.3.5 , you need to downgrade to 4.3.3 which you may not be able to , otherwise the seller would have done it. Ultrasnow 1.2.3 works up to IOS 4.3.3

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