1. Bishart's Avatar
    how to downgrade iphone 3g os4.0 to 3.1.3
    i upgraded my iphone 3g to 4.0 with snowbreez by custom ipsw.
    now speed of my iphone 3g is too slow.
    now i want to go downgrade back to 3.1.3
    or upgrade to 4.1 but i guess that is still not available for 3g.
    so can any1 help me or link me to any tutorial.
    i will be highly thankful for your co operation.

    modern firmware is 5.13.4
    16 gb
    2010-10-25 01:02 PM
  2. eyeRobot's Avatar
    use snowbreeze to go to 4.1, it's better for 3G
    2010-10-26 07:29 AM
  3. iYeow's Avatar
    To downgrade, put your iphone into DFU mode.
    Shift + restore to 3.1.3 ipsw
    Kick out of recovery from Tiny Umbrella when error 1015 pops up.
    Now you are at emergency screen
    Run Redsn0w 0.9.4 to hactivate and jailbreak but point to 3.1.2 ipsw.
    Unlock with Ultrasn0w from Cydia.
    Last edited by iYeow; 2010-10-26 at 07:41 AM.
    2010-10-26 07:39 AM
  4. Bishart's Avatar
    use snowbreeze to go to 4.1, it's better for 3G
    any link or how to go.?
    i am not on official carrier

    To downgrade, put your iphone into DFU mode.
    Shift + restore to 3.1.3 ipsw
    Kick out of recovery from Tiny Umbrella when error 1015 pops up.
    Now you are at emergency screen
    Run Redsn0w 0.9.4 to hactivate and jailbreak but point to 3.1.2 ipsw.
    Unlock with Ultrasn0w from Cydia.

    can u give me any link to such tutorial..?
    i am kind of confused coz i why i need 3.1.2 after i installed 3.1.3 and how cydia will be installed and i am not on offical carrier....
    2010-10-26 10:22 AM
LINK TO POST COPIED TO CLIPBOARD