iOS 4.0 Custom iOS4 fw?

Discussion in 'iOS Jailbreak & Cydia' started by Covenant550, Jun 29, 2010.

  1. Covenant550

    Covenant550 New Member

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    Hey I FINALLY figured out how to downgrade my iphone 3GS back to 3.1.2.

    I have the NEW bootroom, but the 3.1.2 is jailbroken.

    Will it still allow me to install custom 4.0fw?
  2. DeadKid

    DeadKid New Member

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    i think you cant use a custom firmware w/o jailbreak. and as i know there is no jailbreak for new bootrom iphone 3gs'.
  3. iPwn

    iPwn Community Development Staff Member

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    nope. u need old bootrom.

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