Unlock iPhone 3G iOS4 the unofficial SIM card?

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Unlock iPhone 3G iOS4 the use of unofficial SIM card? Yesterday I updated my jailbroken iPhone 3G and iOS4. But then I wanted to use my Vodafone SIM card, I have downloaded and ultrasn0w Cydia to unlock the iPhone, it does not work. I tried 3-4 times, but it did not work. Please give me some tips to my Iphone unloack please ..

keynowin Reply via
tell me your modem’s firmware

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4 thoughts on “Unlock iPhone 3G iOS4 the unofficial SIM card?”

  1. You upgraded your baseband. Currently that baseband is not unlockable with ultrasn0w, as you have unfortunately discovered. You should have researched whether or not it was safe to do that, because now your phone is useless to you. There is a method to upgrade to iOS 4.1 without upgrading your baseband, but it’s too late now as you can’t downgrade your baseband even if you downgrade your firmware.

    iOS 4.2 will be released within a matter of days, and an unlock will be released after that…. however, I’m not sure if the unlock is just for those people who have upgraded to 4.2 while preserving their baseband.

  2. ok . first if u have 05.14.02 version and 4.1 firmware than u won’t be able to unlock it means u cannot use vodafone. i have 3g and i upgraded it with 4.1 firmware and now i m stuck. but
    if u have 4.0.1 or 4.0.2 than u have to restore it again and use redsnow 0.9.5b5-5 version with 4.0 firmware. jailbreak it with 4.0firmware then download ultrasnow through cydia. that might work.
    otherwise just wait few days. 4.2 firmware is coming up, so we will be good. i guess.

  3. You upgraded your baseband. Currently that baseband is not unlockable with ultrasn0w, as you have unfortunately discovered. You should have researched whether or not it was safe to do that, because now your phone is useless to you.