Old bootrom downgrade

Discussion in 'iPhone' started by bobby681, Jul 13, 2010.

  1. bobby681

    bobby681 Active Member

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    Hey guys, I'm usually on the other end of this jailbreak help but I have come stuck this time

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    I recently bought a 3GS which came on either 3.1.2 or 3.1.3, I forgot to check. But that's not the end of my stupidity, I upgraded to 4.0 without saving the blobs. I've checked with iH8sn0w's detector thing and also in the device itself and I do have the old bootrom. This was a good thing I thought, it meant that my previous c*ck up with the blobs was alright.

    I know the old bootrom devices can be jailbroken on 4.0 easily enough if they're on 3.1.2 jailbroken already. I've been trying to downgrade my firmware to an earlier one to do this but I've had no luck. But to my knowledge, I thought the old bootrom devices could be downgraded without shsh blobs.

    Can old bootrom devices be downgraded easily or do they need the blobs as well?
  2. Tkf1

    Tkf1 Community Development Staff Member

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    It needs blobs.

    You can jailbreak with RedSn0w on the old bootrom. I think.
  3. bobby681

    bobby681 Active Member

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    Nah, redsn0w only works with the 3G iPhones, not 3GS on 4.0. Looks like I'm gonna be running stock firmware until our good friend comex is ready

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  4. T0xicH4zard

    T0xicH4zard New Member

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    Im in the same boat as you
  5. mrez

    mrez Member

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    I think you can jailbreak using PwnageTool
    Quote from the Dev Team
    yes??
  6. bobby681

    bobby681 Active Member

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    Needs to be jailbroken on 3.1.2, mine's on 4.0 and can't be downgraded without the silly blobs ):

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