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Thread: how to upgrade to 3.x but not 4.x?

  1. #1
    Default how to upgrade to 3.x but not 4.x?
    i've got an iphone 3g running 3.0 that i want to jailbreak. should i upgrade to 3.1.3 before jailbreaking? should i upgrade to 4.x? can i jailbreak from the most recent iphone 4.1 version? are there functional advantages to having the newer versions?

    how do i upgrade and install to another "newer" version without going to 4.1?

    thanks in advance.

  2. #2
    Retired Moderator iYeow's Avatar
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    Is your iphone currently jailbroken at 3.0

    Do you need an unlock
    Last edited by iYeow; 2010-11-08 at 10:52 PM. Reason: Automerged Doublepost

  3. #3
    it has not been jailbroken.

  4. #4
    Retired Moderator iYeow's Avatar
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    For 3g, 3.1.3 is the fastest, 4.1 is abit slow . So which one do you want ?

  5. #5
    sounds like 3.1.3 is the best choice? which would you use? i will also need to unlock.

  6. #6
    Retired Moderator iYeow's Avatar
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    Many 3g users have upgraded to 4.1 and then downgrade back. So go for 3.1.3 for now.
    Download the 3g 3.1.3 ipsw from here : iClarified - iPhone - Where To Download iPhone Firmware Files From
    onto your desktop
    Now press the shift key + restore/update , a box will open up and browse to the 3.1.3 ipsw
    Once restored and activated
    You can jailbreak with Redsn0w 0.9.4 but browse to 3.1.2 ipsw.
    Unlock with Ultrasn0w from Cydia.

  7. #7
    thanks. i have downloaded 3.1.3. do i connect iphone to itunes and then go to restore - shift +restore?

  8. #8
    Retired Moderator iYeow's Avatar
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    Yes

    I don't think you will get error 1015, but if you do , use Exit recovery from the feature of tiny umbrella.
    When you open up Cydia for the first time, Say Yes to make my life easier, then all future shsh blogs will be saved.
    Last edited by iYeow; 2010-11-09 at 12:17 AM. Reason: Automerged Doublepost

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    volkl1 (2010-11-09)

  10. #9
    if i need to browse to 3.1.2 , does that mean i need to download that as well and keep on desktop?

    was this post meant for me? am i using tiny umbrella?
    Last edited by volkl1; 2010-11-09 at 12:24 AM. Reason: Automerged Doublepost

  11. #10
    Retired Moderator iYeow's Avatar
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    Yes , you need to download 3.1.2 as well

    All my posts are meant for you.
    Since you have restored to 3.1.3 successfully, you do not need Exit recovery.
    Last edited by iYeow; 2010-11-09 at 12:43 AM. Reason: Automerged Doublepost

  12. #11
    when trying to restore w/shift key, it appears i've gotten the standard restore. i never got a box giving me a choice of software. so now i'm locked out w/ no att sim card. i'm at the emergency call screen. ????

  13. #12
    Retired Moderator iYeow's Avatar
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    Why ? you press the shift key first and then press the restore button.
    If you hit restore, you will be taken to 4.1 which locks you out.

  14. #13
    i pressed the shift key then restore and it upgraded to 4.1.

    since then i jailbroke w/ redsnow 0.9.6b1- seemed to work
    then unlocked w/ cydia- seemed to work
    now the phone operates on a 20 sec delay, keeps searching for network and shutting itself on and off

    any suggestions?

  15. #14
    Retired Moderator iYeow's Avatar
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    Comfirm your baseband first, if it is 05.14.xx, then Ultrasn0w will not work yet, wait for an updated version or a new unlock tool.

  16. #15
    after trying limera1n and others, i'm now back to an itunes restored 4.1 (05.14.02).

    what can i do to jailbreak and unlock this?

    can i still go back to 3.1.3? every time i held the shift key when hitting restore and nothing happened but apple restore. what am i doing wrong?

  17. #16
    Retired Moderator iYeow's Avatar
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    You don't press shift and restore the same time. You press shift key first and then the restore button, it should pop a box.
    Do you have fingerprints scanner installed on your laptop ?
    Yes you can downgrade your firmware to 3.1.3 by simply putting your iphone into DFU and do the Shift + Restore to 3.1.3 ipsw.
    But you cannot unlock your iphone since the baseband has been updated.

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