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Thread: Help w/Upgrading a Jailbroken & Unlocked 3GS

  1. #1
    Default Help w/Upgrading a Jailbroken & Unlocked 3GS
    Hello friends,

    It's been about a year since I last followed these forums and I'm amazed at how much more new information and developments there have been in that time. I come to kindly ask your advice on the best way to upgrade the iOS software on my previously jailbroken and unlocked 3GS.

    Here are my current phone specs -
    fw version - 3.1 (7C144)
    iboot - 359.3 (untethered)
    modem fw - 05.11.07
    serial - 86920 (1st 5 digits)

    I jailbroke the phone in early 2010 using Blackra1n, unlocked it and have been using it on T-Mobile. Other than having to occasionally reset the network settings to get the wifi working, I haven't had any major problems since then.

    I would like to be able to upgrade the software to be able to use new apps that require minimum 4.0, but still be able to use on T-Mobile and still have an untethered jailbreak.

    What would be the best way to do this? thanks in advance for your suggestions.

  2. #2
    Retired Moderator j3st3r's Avatar
    Join Date
    Mar 2008
    Thanked 405 Times in 395 Posts

    use latest pwnagetool (mac) or sn0wbreeze (pc) to create a custom 4.3.3 ipsw (make sure to select "activate" option when creating) and restore to that, it will preserve your baseband for unlocking to use on TMobile

  3. The Following User Says Thank You to j3st3r For This Useful Post:

    pablodiablo01 (2011-05-15)

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