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Thread: iphone 3gs upgrade from 4.1 to 4.2?

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I want to use a couple of apps that require ios 4.2 but I only have 4.1 (8B117). My 3gs came jailbroken. is there a way I can move to
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    Default iphone 3gs upgrade from 4.1 to 4.2?
    I want to use a couple of apps that require ios 4.2 but I only have 4.1 (8B117).
    My 3gs came jailbroken. is there a way I can move to 4.2 from 4.1? If so would I have to back everything up first so as not to lose it?

    Thank you for any help

    mcmircle, iphone newbie

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    2k1
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    You need to see what blobs you have for the phone. Open up Cydia and see if it has any number on the top of it.

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    mcmircle (05-28-2012)

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    Do you mean where it says SHSH ils4.1, 5.1, 5.1.1 above Welcome to Cydia?

    Oops, I mean where it says SHSH ios 4.1, 5.1, 5.1.1?
    Thank you for your prompt reply.
    Last edited by mcmircle; 05-28-2012 at 01:47 PM.

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    Yes that's them. That's the firmware which you can update to.

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    Thank you again,
    So I can't upgrade to 4.2 but would have to upgrade to 5.1 and then unlock and jailbreak again?
    Hmmm. not sure if I'm ready to do that.
    But thanks.

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    EVO
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    Quote Originally Posted by mcmircle View Post
    Thank you again,
    So I can't upgrade to 4.2 but would have to upgrade to 5.1 and then unlock and jailbreak again?
    Hmmm. not sure if I'm ready to do that.
    But thanks.
    you CAN update to 5.1 but its a TETHERED JAILBREAK unless you have the old bootrom, otherwise update to 5.1.1 because the Chronic Dev-Team just released an UNTETHERED jailbreak for 5.1.1

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    6thday is correct I think ya better off going to 5.1.1.

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    Quote Originally Posted by 6thDAY View Post
    you CAN update to 5.1 but its a TETHERED JAILBREAK unless you have the old bootrom, otherwise update to 5.1.1 because the Chronic Dev-Team just released an UNTETHERED jailbreak for 5.1.1
    This.

    Use the most current version of redsn0w (available here, I think the most current version is 0.9.11b4) to make a custom IPSW (Extras -> Custom IPSW, point to a downloaded 5.1.1 IPSW file) to preserve your baseband for unlocking.

    Good luck!

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    what is the bootrom? is that the same as the baseband? 6.15.00
    How would I know what bootrom I have?

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    Quote Originally Posted by mcmircle View Post
    what is the bootrom? is that the same as the baseband? 6.15.00
    How would I know what bootrom I have?
    Look here, it explains it.
    Bootrom - The iPhone Wiki

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