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iPhone 3G 3.1.3 Unlock?
- Thread starter dissizitt
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5.15 baseband can't be unlock.
And, to have 3.1.3 firmware & 5.15 baseband, it means the phone was updated to 4.2 firmware which also updated the baseband to 5.15. Then, the phone was downgraded to 3.1.3 firmware, but since baseband can't be downgraded, it stayed at 5.15. Thus, as you can see, upgrading the firmware or not won't matter.