What happens if you update your factory unlocked iPhone 4s to iOS 6?

What happens if you update your factory unlocked iPhone 4s to iOS 6. I want to update my iPhone through iTunes or just through my iPhone and wondering will it lock my iPhone.
Please answer As soon as possible

If it is properly factory unlocked, the unlock won't be affected by the upgrade.

Hmm. Maybe youll have to jailbreak it again

If you update your factory unlocked iPhone 4S to iOS 6 you end up with a factory unlocked iPhone 4S on iOS 6.

Factory unlocked models remain unlocked no matter what.

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