Is it possible?

Discussion in 'Jailbreaks and iOS Hacks' started by SirStrumalot, Apr 9, 2011.

  1. SirStrumalot macrumors 6502

    Joined:
    Feb 28, 2011
    Location:
    Minneapolis, MN
    #1
    Hey guys,

    I was wondering whether it was possible to downgrade an iphone 3G from 4.3.1 to 3.1.3? This is mostly to get rid of the sluggish performance.

    I did google it but a lot of info seemed to be from a while ago (which made me wonder whether anythings changed). I know it used to be possible usong recboot?

    Any help appreciated! :confused:
     
  2. labman macrumors 604

    labman

    Joined:
    Jun 9, 2009
    Location:
    Mich near Detroit
    #2
  3. Crystal-RX macrumors 68030

    Crystal-RX

    Joined:
    Dec 22, 2008
    Location:
    Seattle, WA USA
    #3
    Just to get clarification;

    for 3G, the latest firmware is 4.2.1. How did you manage to put 4.3.1 on to the 3G :confused:

    Having said that, if your phone has 4.3.1 IOS, then your Iphone is 3GS and not 3G. If you want to downgrade 3GS firmware, then you need to have shsh blobs save.

    For 3G, you do not need shsh blob save for downgrading firmware.
     
  4. SirStrumalot thread starter macrumors 6502

    Joined:
    Feb 28, 2011
    Location:
    Minneapolis, MN
    #4
    Oops sorry that was a typo. Thanks labman I'll try that!
     
  5. labman macrumors 604

    labman

    Joined:
    Jun 9, 2009
    Location:
    Mich near Detroit
    #5
    keep in mind what Crystal-RX said if it's a 3gs the link I gave will not work!
     
  6. SirStrumalot thread starter macrumors 6502

    Joined:
    Feb 28, 2011
    Location:
    Minneapolis, MN
    #6
    It's a 3G on 4.2.1... original post was a typo. Thanks again!
     
  7. labman, Apr 9, 2011
    Last edited: Apr 9, 2011

    labman macrumors 604

    labman

    Joined:
    Jun 9, 2009
    Location:
    Mich near Detroit
    #7
    best bet for you is 3.1.3 as you originally asked. use the link I gave you don't need TU. but you Baseband will not downgrade. Saw in another post from Crystal-RX there is a rare number of 3G Iphone which has bootloader 05.08 can be downgrade the baseband f0recast or TU will help you identify if you are one of the lucky ones. Crystal-RX thanks for the education not up on all my 3G info lol. Crystal-RX I also copied part of you post from the other thread. Want to give proper credit.
     

Share This Page