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Thread: What is issue with JB on iPhone 4?

  1. #1
    Default What is issue with JB on iPhone 4?
    I've been following this stuff for a while now. I JB'd my 3gs from 3.1 to 4.0.1 then to 3.1.3 then to 4.0 to get it right. Long story. What I don't understand is why can't you just downgrade the iPhone 4 to 4.0, JB and leave it as it is or just JB if it's on 4.0.

    Are there other obvious issues that affect the programming outside of the standard firmware/bb concerns? I'd have to think that others have tried this.

    Also, if I did go and buy an iPhone 4 today and backed it up, if the process didn't work, I'd be able to restore it anyway correct?

    Lot's of questions... Thanks in advance and keep up the good work on here!

  2. #2
    iPhone? More like MyPhone dazzer1983's Avatar
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    Google is your friend :0)

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  4. #3
    My iPhone is a Part of Me
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    You cant JB the i4 because the JB isn't available yet.....

  5. #4
    It's new hardware too that causes problems. Same story as the iPhone 3G + 3GS.

    I imagine iOS 4 is different on the iPhone 4 to how it is on the previous models. iPhone 4 and iOS 4 are developed hand in hand as far as I can tell, where as for say the 3GS it's almost a "port" of the iPhone 4 OS.

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  7. #5
    Quote Originally Posted by dazzer1983 View Post
    Google is your friend :0)
    if you know the answer why not just tell him?

  8. #6
    My iPhone is a Part of Me
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    Quote Originally Posted by Neo0019 View Post
    if you know the answer why not just tell him?

    Because sometimes educating ppl on how to find the info as opposed to just spoon feeding it to them is the best solution.

    If you do everything for your pupils how can you expect them to learn?

  9. #7
    Give a man a fish, he eats for a day.
    Teach a man to fish, he never goes hungry.

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  11. #8
    Retired Moderator z3r01's Avatar
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    But he also gets eaten by sharks

  12. #9
    Okay 2 things.
    1) I used Google to get to this page. So turns out even if Google does know it gives me the wrong links in the first place.
    2) Build a fire for a man and he'll be warm for a night, but set a man on fire and he'll be warm for the rest of his life.

  13. #10
    Lol what ^^^

  14. #11
    Gotta love it. Odd thing is that we all are looking for the same info. I'll gladly bow to the amazing knowledge that most of you possess. I wasn't trying to start a snipe hunt but more asking some folks who seem to know what they are talking about.

    I do use google. I read forums. I thought I could ask a question and at least see a reasonable response. The jb isn't out. I know this. We all do. I was only asking if any one had tried the downgrade and reinstall of the os to the new phone or not.

    My apologies if my question was too simple or seemed as if I didn't spend the past weekend reading up as I have. I am only looking for knowledge and hope I can gain it here. Maybe share my own.

    Cheers.

  15. #12
    Retired Moderator StealthBravo's Avatar
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    The jb for iPhone 4 is done but the tool has to be updated for all devices and to make it work on 3.1.2, 3.1.3,4.0, and 4.0.1. I just finished a key index for comex that contains all keys/ivs for all those devices and firmwares.

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  17. #13
    Quote Originally Posted by StealthBravo View Post
    The jb for iPhone 4 is done but the tool has to be updated for all devices and to make it work on 3.1.2, 3.1.3,4.0, and 4.0.1. I just finished a key index for comex that contains all keys/ivs for all those devices and firmwares.
    Thanks! This is good news. I am at best buy waiting to pay for the 32g one now. I couldn't wait any longer.

    I'll be keeping my eye open and will gladly guinea pig it

    Thank you!

    Got the new phone. Very nice piece. Amazing how nicely built it is. It will suck not to have mywi and some of the other conveniences JB helped. It seems that it is faster in operation than my 3GS. Back to the waiting game now....
    Last edited by mycrookedtoe; 2010-07-23 at 05:59 AM. Reason: Automerged Doublepost

  18. #14
    Livin the iPhone Life mr.sparky's Avatar
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    Quote Originally Posted by Neo0019 View Post
    if you know the answer why not just tell him?
    Because spoon feeding newbies only raise fat lazy trolls......
    http://i122.photobucket.com/albums/o260/cpjr1979/dc5274181cd827585d4bb6d16bedb210cop.png
    Steroids are yummy

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