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Thread: How to jailbreak iPhone 4 (iOS 4.1) step by step

  1. #1
    Default How to jailbreak iPhone 4 (iOS 4.1) step by step
    Hello,

    I just got my first iPhone 4 running iOS 4.1.
    I'd like to jailbreak it but I don't know what to do and in which order to to them. Could someone please help me out?

    So far, I believe I have to:

    1. Do a system backup in iTunes. (How is this done?)
    2. Run limera1n and install Cydia.
    3. Run tiny umbrella to backup my SHSH.
    4. .. ?

    Have I missed anything? If so please let me know.

    Thanks,
    Daniel

  2. #2
    Superbad Modder-ator Simon's Avatar
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    Sounds like you got it. To do a backup in iTunes all you have to do is sync it. iTunes does a backup everytime. Also you can use tiny umbrella anytime, even if not jailbroken.

  3. The Following User Says Thank You to Simon For This Useful Post:

    danielkun (2010-10-14)

  4. #3
    Thanks.

    2 more questions.

    Can I uninstall limera1n after I installed Cydia? Or do I need limera1n in the future?

    What will happen when I update iOS to 4.2? Will cydia still be there or do I have to jailbreak it "again" ?

    Thanks

  5. #4
    Your steps were correct, but I would use greenpoision instead of limera1n. Only because I've done mine with that with no problems & I've read a lot how limerain has messed up devices.

    Also when 4.2 comes out DO NOT update until we are given the green light from the dev team that limerain or green poision work.

    Once you update you will lose the jailbreak and cydia & will have to do the process again (normal) but if the jailbreak doesn't work for 4.2 then you would be out of luck.

    Extra advice unless you feel comfortable using tinyumbrella it's easier if when you open cydia it will ask if you want it to "make your life easier" if you click yes then it will save your shsh fr you

  6. #5
    Superbad Modder-ator Simon's Avatar
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    Quote Originally Posted by danielkun View Post
    Thanks.

    2 more questions.

    Can I uninstall limera1n after I installed Cydia? Or do I need limera1n in the future?

    What will happen when I update iOS to 4.2? Will cydia still be there or do I have to jailbreak it "again" ?

    Thanks
    Yes you can uninstall limera1n once cydia is installed. Alternatively if you decide to use greenpoison (which I also prefer) it will ask you if you want to delete the loader after cydia is installed, which is also fine to do.

  7. #6
    What's Jailbreak?
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    does this unlock too.

    i have iphone 4 with factory unlocked ios 4.1 with baseband 2.10.04
    now how can i jailbreak and unlock my iphone 4

  8. #7
    Retired Moderator j3st3r's Avatar
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    Quote Originally Posted by coolbikesh
    does this unlock too.

    i have iphone 4 with factory unlocked ios 4.1 with baseband 2.10.04
    now how can i jailbreak and unlock my iphone 4

    if it's factory unlocked then there is no need for you to unlock after the jailbreak since it will always be unlocked, no update will change that, here is a guide to use greenpois0n (which I also prefer) or limera1n

    How to Jailbreak Firmware 4.1 iPhone 3GS/4, iPad, iPod Touch 3G/4G with greenpois0n

    How to Jailbreak Firmware 4.1 iPhone 3GS/4, iPad, iPod Touch 3G/4G with limera1n
    Last edited by j3st3r; 2010-10-30 at 09:47 AM.

  9. #8
    Quote Originally Posted by danielkun View Post
    Hello,

    I just got my first iPhone 4 running iOS 4.1.
    I'd like to jailbreak it but I don't know what to do and in which order to to them. Could someone please help me out?

    So far, I believe I have to:

    1. Do a system backup in iTunes. (How is this done?)
    2. Run limera1n and install Cydia.
    3. Run tiny umbrella to backup my SHSH.
    4. .. ?

    Have I missed anything? If so please let me know.

    Thanks,
    Daniel
    Should the order be back up base band 2?

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