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Discuss Error 1604 when loading custom fw at the Blacksn0w (3G(S) unlock) - Hackint0sh.org; First of all, I'm not really sure what BootROM I have because all of the ...
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    Default Error 1604 when loading custom fw

    First of all, I'm not really sure what BootROM I have because all of the guides I have seen say to refer to "Device Instance Path" in Device Manager, but I have no such field in the details.

    Secondly, what I'm trying to do is the load 3.1.2 factory settings, jailbreak, load custom 3.1.2, jailbreak method. When I try to load the custom fw there is an error 1604. I have loaded this custom fw on another older 3GS with no problem.

    Is it possible that the custom fw is not compatible with a newer bootrom?

    Thanks for any help provided



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    Quote Originally Posted by TachyonWireless View Post
    First of all, I'm not really sure what BootROM I have because all of the guides I have seen say to refer to "Device Instance Path" in Device Manager, but I have no such field in the details.

    Secondly, what I'm trying to do is the load 3.1.2 factory settings, jailbreak, load custom 3.1.2, jailbreak method. When I try to load the custom fw there is an error 1604. I have loaded this custom fw on another older 3GS with no problem.

    Is it possible that the custom fw is not compatible with a newer bootrom?

    Thanks for any help provided
    Your iPhone must be in DFU mode (screen black but computer still detects iPhone) to get the "Device Instance Path" details.

    The only way to jailbreak a new bootrom 3GS is via blackra1n.

    A good method to tell if you have the new bootrom by jailbreaking it with blackra1n and seeing if it restarts normally afterwards.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
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