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Thread: Is safe to upgrade to 4.0 and unlock?

  1. #1
    My iPhone is a Part of Me vietkool's Avatar
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    Default Is safe to upgrade to 4.0 and unlock?
    Hi,

    I have been waiting for awhile to make sure OS4 stable and will be unlocked for Tmobile used.
    I have 3Gs runing firmware 3.0 (I think is old modem). Can I use itune and upgrade to OS4 and can it be unlocked? or only can be jailbreak ? and all function such as MMS, SMS, internet, edge still work?
    Last edited by vietkool; 08-04-2010 at 01:28 PM.

  2. #2
    Livin the iPhone Life Poseidon79's Avatar
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    Since you have the old bootrom you can make a custom 4.0 firmware with Pwnage Tool (Mac) or sn0wbreeze (PC) then restore to that.

  3. #3
    My iPhone is a Part of Me vietkool's Avatar
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    all major functions work ok for OS4 ?

  4. #4
    wondering the same thing before I update

  5. #5
    What's Jailbreak?
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    Whats the old bootrom? I just got a 3GS today on firmware 3.1.2 (5.11.07)

  6. #6
    My iPhone is a Part of Me vietkool's Avatar
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    my firmware is 3.0, modem firmware 04.26.08

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