1. kvijay's Avatar
    Hello Friends,

    I have a iPhone 3GS (16 GB) and would like to upgrade it to IOS 4

    Following are my current iphone details.

    Version : 3.1.2
    Model : MC135LL
    Modem Firmware 05.11.07

    My phone is already Jailbroken & unlocked by Blackra1n and Cyidia.

    Need your help were i can refer step-by-step guide to upgrade my iphone to IOS 4.

    Best Regards,
    2010-11-18 10:31 AM
  2. eyeRobot's Avatar
    2010-11-18 12:44 PM
  3. kvijay's Avatar
    Thanks for your reply.

    As i have windows XP this tool will not work for me.

    Please suggest me an alternative.

    Last edited by kvijay; 2010-11-18 at 05:52 PM.
    2010-11-18 02:08 PM
  4. eyeRobot's Avatar
    Get the latest version of redsnow from Dev-Team Blog

    Use redsnow to only put your phone into dfu mode.

    Check your private messages in 5 mins, a link may magically appear for you to download a custom firmware. Would you need hacktivation or do you have an original carrier sim?

    ...... Both links may have appeared. Just download the one you need.
    Last edited by eyeRobot; 2010-11-18 at 02:43 PM. Reason: Automerged Doublepost
    2010-11-18 02:43 PM