how to downgrade jailbroken 3g 4.0.2 to lower firmware?

Discussion in 'iPhone Tips, Help and Troubleshooting' started by Amacron, Oct 24, 2010.

  1. Amacron macrumors newbie

    Joined:
    Oct 24, 2010
    Location:
    crestwood ky
    #1
    how do I downgrade my 3g to something less then 4.0.2 firmware? How do u lunlock the iphone 3g

    Thank you in advance
     
  2. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
    You can go down to 3.1.3
    Whats your modem firmware right now?
     
  3. Amacron thread starter macrumors newbie

    Joined:
    Oct 24, 2010
    Location:
    crestwood ky
  4. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #4
    You're good.
    Once you JB you can unlock it with ultrasnow.
    Just make sure not to update or restore to official 4.1 firmware.
     
  5. Amacron thread starter macrumors newbie

    Joined:
    Oct 24, 2010
    Location:
    crestwood ky
    #5
    I have just finished JB it no how do you downgrade to 3.1.3 and then how do you unlock it. I am a newbie at this. thanks for your help
     
  6. guitardave62000 macrumors regular

    Joined:
    Oct 2, 2008
    #6
  7. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #7
    You're JB right now on what firmware? 4.0.2?
    You dont have to downgrade if you dont want.
    Just open up cydia and install ultrasnow to unlock it.
     
  8. Amacron thread starter macrumors newbie

    Joined:
    Oct 24, 2010
    Location:
    crestwood ky
    #8
    yes jailbroke on 4.0.2. the only reason I was considering downgradeing is 4.0.2 is very slow. Do I dL ultrasnow on the phone of on my pc?

    Again thanks for your help
     
  9. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #9
    No you open cydia and install ultrasnow from there. You don't download
    It on your computer.
     

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