Can you update an unlocked iPhone 3s without it becoming unlocked?

I got an iPhone 3s (unlocked) and I want to know if I can update it without it becoming unlocked?

There's no iPhone 3S. Its called 3GS & nope to the question It will lock once updated since the unlock was not supposed to be there in the 1st place. You can, if available, put the unlock back in place once the update is complete.

If you used software unlocks you may get lock again after update but factory unlock don't get unlock after unlock done. Try this website, they unlocked my friend's iPhone with his imei # permanently for $25.

http://officialappleunlocker.com/

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