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Thread: 3GS iOS 3.0 update to 4.x

  1. #1
    Default 3GS iOS 3.0 update to 4.x
    I got a Iphone 3gs with old 3.0 ios lol

    im thinking about upgrading to the new iOS 4.0

    however, i do want to keep my ability to UNLOCK, meaning i don't want to upgrade my baseband.

    Can someone give me the steps i need to do in order for me to update safely and without affecting my baseband?

    Sorry i'm not very familiar with this.

    Thanks in advance : )

  2. #2

  3. #3
    lol no idea

    all i know is ...

    Version : 3.0
    Modem Firmware: 04.26.08

  4. #4
    Superbad Modder-ator Simon's Avatar
    Join Date
    Nov 2007
    Thanked 17,645 Times in 8,025 Posts

    Download tiny umbrella:The Firmware Umbrella - TinyUmbrella
    Press save SHSH with your iphone connected and see what SHSH it can get.

    Or you can skip all that. I assume you are jailbroken with redsn0w. Download sn0wbreeze:
    Create a custom 4.1 with it then shift-click restore to that custom 4.1. This will preserve your baseband.

  5. The Following User Says Thank You to Simon For This Useful Post:

    tonyklo (2010-10-19)

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