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My iPhone 3GS was unlocked using O2's official method.

I am considering jailbreaking but am unsure if this will affect the unlock status of the handset.

The jailbreak options available seem a little bewildering, so is there a specific jailbreak method which doesn't unlock and will leave my iPhone with the official unlock?

What I really don't want to happen is to jailbreak and have the phone lock again on the next iOS update.

I am currently running iOS 4.3.3 and use iTunes on Windows 7 x64.

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up vote 1 down vote accepted

It won't affect the unlock. A legitimate (ie sanctioned by the carrier and not hardware/software) unlock happens at the carrier level and jailbreaking doesn't affect that.

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Is there a specific tool I need to use? I've been on the googles and found this quote: "NOTE: Those of you who rely on a carrier unlock MUST STAY AWAY from Redsn0w and stock iOS 4.3.3 firmware." (…) – Shevek May 6 '11 at 15:01
@Shevek that means people who are locked to a carrier and use jailbreak to unlock their carrier lock. In your case, you're not locked to a carrier. But I don't think the official carrier unlock is only at carrier level, though I agree jailbreak certainly will not affect your unlock. – cregox May 6 '11 at 19:45
so I can safely use either Redsn0w or Sn0wbreeze then? – Shevek May 7 '11 at 1:01
ah, the IMPORTANT FOR UNLOCKERS section on this page explains it quite well: – Shevek May 7 '11 at 1:04

Follow this wizard:

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doesn't include 4.3.3 yet – Shevek May 7 '11 at 0:59
although if I select 4.3.2 it ends up at a Redsn0w page about 4.3.3! – Shevek May 7 '11 at 1:02
Do you object to jailbreaking on 4.3.3 instead of 4.3.2? – gesher May 9 '11 at 21:53

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