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  1. #1


    Member Since
    Mar 23, 2010
    Posts
    13
    dowgrade 4.0 to 3.1.3 FW??
    Hi:

    I have a jailbroken iPhone 3G running iOS4--it used to be running 3.0 but I upgraded.

    As many other people have found it is not running great on iOS4--is it possible to rejailbreak to 3.1.3 and restore from backup? If so, should I just follow the regular jailbreak instructions as per the dev team?

    Thanks!

  2. #2


    Member Since
    Mar 23, 2010
    Posts
    13
    i should add I am unlocked with ultrasn0w (jailbroke with redsn0w). I read that I cannot unlock 3.1.3. So which FW should I downgrade to? (if that is possible)...

  3. #3


    Member Since
    Jul 08, 2009
    Location
    NY
    Posts
    208
    Specs:
    13" MBP, 3GS & iPhone4 Factory Unlocked.
    You can unlock 3.1.3 but i would say do 3.1.2 just download a custom firmware 3.1.2 and hit shift+restore and locate the custom 3.1.2
    ZUBAIR

  4. #4


    Member Since
    Oct 22, 2007
    Location
    Tampa , FL
    Posts
    1,957
    Specs:
    15" MBP Unibody 2.53Ghz 4GB RAM 250GB HD,VERIZON iPhone 4,SIG P238 ,iPad,6th Gen iPod NANO
    Quote Originally Posted by ZEEK View Post
    You can unlock 3.1.3 but i would say do 3.1.2 just download a custom firmware 3.1.2 and hit shift+restore and locate the custom 3.1.2
    There is more to it than that, Apple does not allow iDevices to be downgraded any more, What you have to is go into the home page of Cydia and mahe sure you SHSH files are saved (It will say so on the top) below are 2 random screen shots of the Cydia home screen your Cydia should look like one of these.

    If your Cydia home screen looks like the top image then click "Make my life easier" if it looks like the bottom and says you
    SHSH or Blobs are saved then download the correct firmware and Google how to do a Cydia SHSH restore.

    Good luck



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