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Discuss Can't Get Signal when Custom 2.2.1 Applied at the PwnageTool - Hackint0sh.org; Hello people smarter than me. I wonder if anyone has some idea about what I ...
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    Default Can't Get Signal when Custom 2.2.1 Applied

    Hello people smarter than me.
    I wonder if anyone has some idea about what I have just come across with my friend's 3G?
    Basically, I Pwned my 3G iPhone (a 16G in white) about 2 months ago, it was totally successful using Pwnage 2.2.5 and custom firmware 2.2.1.

    I have just tried to do the same for a friend who got his O2 iPhone one week ago. This time when I Pwned and restored the custom firmware I get no phone signal at all with the O2 SIM or any other SIM installed.
    So, I reran Pwnage and deselected the "Activate the Phone" from General Settings. This time I connected to iTunes and it reactivated the phone which worked with the O2 SIM but now has the "Wrong SIM" message when I put in another.

    I have now gone through this process 3 times always with the same result.

    I would be most appreciative of any advice.

    Many thanks, Mark.



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    Hmmm,
    Has nobody seen this before???

    Cheers, Mark.

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    check the baseband/modem firmware version. If it is 2.30.xx then it will not work without an offiicial SIM.
    Since he got the O2 iphone a week ago, it is most likely the baseband version is 2.30.xx hence unlock failed with yellowsn0w & a non-official SIM
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    Thank you for the reply.
    It is indeed 2.30.xx
    Is there now any way to roll back to an earlier firmware version, or indeed is this what I need to do?
    Many thanks, Mark.

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    If your Bootloader is version 5.08, you can downgrade the baseband to the 2.28. Otherwise, your are stuck.

    How to Check Your iPhone Bootloader Version (Windows)

    How to Downgrade Your iPhone 3G 2.30 (2.2.1) Baseband for Unlock

    Good luck.
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