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Discuss BlackRa1n Questions. at the Blackra1n (3G(S) jailbreak) - Hackint0sh.org; A few things.... With blackrain, Is there a need to resync after you tether the ...
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    Default BlackRa1n Questions.

    A few things....

    With blackrain, Is there a need to resync after you tether the JB? Or does it just start up with everything on the phone as is? Im pretty sure i read around the forums that you dont need to.. just clarifying tho...

    also, lets say after you jailbreak it... and your phone dies... you plug it in but its stuck on recovery... is there a way to start up the default firmware without the computer? I know you can get out of DFU by holding power / home... does it work the same with with recovery? Can you just put it into DFU mode from recovery, then take it out of DFU?
    Last edited by ShortStack; 12-01-2009 at 05:50 PM.



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    Quote Originally Posted by ShortStack View Post
    A few things....

    With blackrain, Is there a need to resync after you tether the JB? Or does it just start up with everything on the phone as is? Im pretty sure i read around the forums that you dont need to.. just clarifying tho...

    also, lets say after you jailbreak it... and your phone dies... you plug it in but its stuck on recovery... is there a way to start up the default firmware without the computer? I know you can get out of DFU by holding power / home... does it work the same with with recovery? Can you just put it into DFU mode from recovery, then take it out of DFU?
    I'm really a bit unsure what you specifically are asking about.

    if you are talking about tethered jailbreaks (ie 3GS or 3rd gen iPod touch with the newer iBoot-359.3.2 bootroom). No there is no need to resync after you kickstart the jailbreak. The phone starts up as normal once you run blackra1n to kickstart past the recovery mode logo.

    Your second question, yes it is possible to kickstart a tethered jailbreak without a computer, you need some sort of programmable serial interface . This would usually send a command to iRecovery that would trigger the blackra1n exploit to kickstart the boot process. This was demonstrated with an iPod touch 2G last year by musclenerd when the iPod touch 2G was tethered jailbreak only before the 24kpwn hole was found.
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    First off, thank you for the answers.

    But i want to elaborate on the second question...

    Im not even meaning to kickstart a tethered jailbreak... im talking about kickstarting the iphone to restart itself in a Non jailbroken fashion... So after the battery dies, you might still be able to restart the phone, just without any of the jail break features...

    I guess im just trying to clarify that once the phone is dead or turned off, it is bricked untill you get to your computer...

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    Quote Originally Posted by ShortStack View Post
    I want to elaborate on the second question...

    Im not even meaning to kickstart a tethered jailbreak... im talking about kickstarting the iphone to restart itself in a Non jailbroken fashion... So after the battery dies, you might still be able to restart the phone, just without any of the jail break features...

    I guess im just trying to clarify that once the phone is dead or turned off, it is bricked untill you get to your computer...
    Yes you are correct your iPhone will be bricked until you get it to a computer.

    As far as I know, it is not possible to get a jailbroken iPhone to restart itself in a non jailbroken fashion without using a computer to reflash the NOR. The updated bootrom is detecting that the security chain of trust is broken and refusing to continue booting.

    What blackra1n does is leverage an exploit at a higher level in the boot process to allow untrusted code to be executed.
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    How to report an iTunes restore/update fail in a useful manner
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    mmm so it is not even possible to downgrade to an earlier firmware if we have the new bootrom? as I did not see any post about downgrading.


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    Quote Originally Posted by ZeRaWaReZ View Post
    mmm so it is not even possible to downgrade to an earlier firmware if we have the new bootrom? as I did not see any post about downgrading.
    The bootrom cannot be reflashed, so downgrading to a previous firmware (if it was possible) would not help.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
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    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
    iPhone 3GS 32GB (4.3.3; Pwnagetool) factory unlocked oldest SHSH 3.1
    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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    Could they create their own baseband?

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    Quote Originally Posted by ShortStack View Post
    Could they create their own baseband?
    The baseband is not involved in jailbreaking. So your statement shows you do not understand this process at all.

    The baseband is only changed in unlocking and due to Apple's improved security there has only been one time since the 3G models were released that it was possible to permanently change the baseband outside of apple's normal upgrade process for the baseband. This was promptly patched by Apple in 3G iPhones that shipped afterwards. So for over a year now the dev team have been limited to patching the baseband in memory. This approach must be reapplied via a script each time the iPhone boots up.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
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    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
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    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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    so for now we just need to wait till a new exploit is found.

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    Quote Originally Posted by ZeRaWaReZ View Post
    so for now we just need to wait till a new exploit is found.
    Depends on who finds the exploit... I think if the devteam find a new exploit they will sit on it until the 4G iPhone is released. They did this with pwnage2 exploit with OS 2.0 and the 3G iPhone. They also tried to do this with the 24kpwn exploit but it was leaked in April, partly blocked by the ECID SHSH in the 3GS and totally blocked by the new bootrom update in late September. This is the cat and mouse game with Apple, no point burning up valuable exploits on hardware that is mid release cycle.

    That said, the chances of the dev team finding this is low because the dev team generally are not interested in the iPod touch and it is the iPod touch which seems to give early hints on how apple plans to upgrade the low level of the iPhone.

    Geohot has said if he finds a new bootrom exploit he will release it. Geohot does not spend a lot of his time on the iPhone these days though.

    Maybe chronicdev will surprise us again, they did not deliver on greenpoison but they were responsible for a lot of the early work on the 24kpwn exploit and they seem more interested in the iPod Touch than the dev team.
    Please read the stickies & search forum before posting!
    How to report an iTunes restore/update fail in a useful manner
    -

    iPad 3G 64GB (4.3.3, Redsn0w) oldest SHSH 3.2.2
    iPhone 4 32GB (4.2.1, Redsn0w JB-monte) oldest SHSH 4.1
    iPhone 3GS 32GB (4.3.3; Pwnagetool) factory unlocked oldest SHSH 3.1
    iPhone 8GB (3.1.3; Pwnagetool) AT&T Locked - Unlocked with bootneuter

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    Did we solve your problem? Got a dollar or two spare ? Donate!


 

 
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