iPhone iOS 4.0.2: Jailbreak and Unlock – How to Guides

By Alan Ng - Aug 22, 2010

Apple has only just released iPhone iOS 4.0.2 a few hours ago, but there are a few unlock and jailbreak guides that are already making the rounds. We have full details on them now to share with those who are interested.

Both guides come to us courtesy of RedmondPie, as they have included them on their website with easy step-by-step instructions to follow.

Firstly, you’ll need to jailbreak your device if you want to unlock it, and this can be achieved using the Redsn0w tool. You’ll find download links to all the relevant files you need, while there are also a few images to help you along the way if you get stuck.

Once you’ve jailbroken your device, you can then proceed to unlock your iPhone 4 using Ultrasn0w. A full guide on this can be seen over at RedmondPie below. Let us know if this works for you.

Jailbreak iOS 4.0.2 – RedmondPie
Unlock iOS 4.0.2 – RedmondPie

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Also See: Hill on iOS 6.0.1 jailbreak videos for iPhone 4S, 5

  • zcg

    With Ultrasnow

    • Dan

      My Iphone 4 4..0.2 with BB 01.59 couldn't be unlocked with ultrasn0w. It says that unlocked, but phone doesn't receive signal, and doesn't show Tmobile(carrier name). so strange, no one know what's wrong. maybe you know?

  • Anthony

    My iphone 4 is jailbroken but is on 4.0.2. Can I unlock it? if so, how?

  • Ferns

    Yah, same hir, i fu***in stupid to upgraded it to 4.0.2. Now i cnt even get a free games and ringtones to the itunes through cydia! Can anyone help us pls! Im on 3gs and seeking for good samaritan to help us from this kind of problem.

  • Lord's Thug

    Ive been looking online to unlock my iphone 4 4.0.2 every link goes to another link…. very annoying, than i have a 32g itouch 2 gen 4.1 same thign every link goes nowhere…. can anyone help? All i want to do is unlock my iphone than jail break the itouch.

  • A E

    Dear All,

    Two weeks ago I bought an IPhone 4 4.0.2 from apple (USA) without a contract.
    When I checked it with forecast software it says it is unlocked however I can not use it with an international gsm card.
    Even the software says it is unlocked do I need to jailbreak it?
    If yes, where can I find the related software?

  • Giovanni

    Dear All, I need help for jailbreak my 4G 4.0.2, any one can help me please?
    best regards

  • BB2524

    Is there a jailbreak available for iphone 4(4.0.2)???

    • Kevin

      Did u get a unlock for the 4.0.2

  • Mac Daddy

    I think people that make jailbreak happened…. I think they were all hired by apple because it's been awhile they have fix for 4.0.2 🙂
    or maybe not…..

  • bob smith


  • j99

    Is there a jailbreak available for iphone 4(4.0.2)???

  • Rain2291

    I have a iPhone 4 will the jailbreak allow me to use face time over 3G

    And does it use Cydia like jailbreakme.com

  • Nancee

    hi everyone!

    My brother gave me his 3gs i phone, never been jailbreaked before, with 4.0.2. I understand that you can jailbreak your phone by opening safari and go to jailbreakme.com with 4.0.1

    My question is can i downgrade my current 3gs 4.0.2 to 4.0.1 and use jailbreakme.com to jailbreak my 3gs?

    many thanks to all for your answers.


  • Spider Jerusalem

    I updated my unlocked 3gs to the shitty fucking 4.0.2 and now it's bricked and locked so I can't even downgrade it.

    How long do you think it'll take to find an unlock for the 4.0.2? I am relatively new to this. It's a huge piss off.

  • Lf

    May I know if this jailbreak and unlock works for iPod touch 3rd gen?

  • sahil gupta

    Unlocked the Iphone 3g ios4.0.2. the redmond solution works. The key is to allow the packages to download properly. Sometimes wi-fi doesnot connect. Just reset wi-fi through settings and download packages properly…don't go to further steps unless u download packages in the intermediate steps properly

  • khaleel

    i have iphone 3gs 4.0.2 i need jailbreak.please help me jailbreak

  • Tony Shi

    I have learned my lesson to not update. I think I will stay at 4.0.1 on my iPhone 4 for a very long long time as the jailbreak for this fireware is a piece of cake to use. I think everybody should know

  • Kareeeem

    what's about the 3GS? do you believe, there will be a jailbreak for it soon?

    • Thylacine

      There already is, jailbreak me.com if you haven’t upgraded to iOS 4.0.2. Just open up safari on your iPhone and go to that site and follow the simple instructions and voilà.

    • DubE

      Ive had my ipod touch 2g jailbroken since the day after 4.02 came out. redsn0w…

    • Bob.

      there is a new jail break called limesnow

  • itouchmyitouch

    dumb question:
    if i just choose not to update my itouch to 4.0.2, will jailbreakme.com still work and will my jailbroken ipod work even though the new update patched it?