I have an iphone 3gs 8gb .i got it from ebay and it;s firmware is 4.1,if i upgrade it will it lock?

i have an iphone 3gs 8gb .i got it from ebay and it;s firmware is 4.1,if i upgrade it will it lock?

Hi
Just call up apple care of your country and tell them your IEME number. They will let u know whether the iphone is factory unlocked or not.
If its factory unlocked you can update the firmware and phone would not get locked.
So just call them, they will help you.

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