How come limera1n can't be patched?

Discussion in 'Jailbreaks and iOS Hacks' started by JordanDevine, Oct 11, 2010.

  1. JordanDevine macrumors member

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    #1
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_1 like Mac OS X; en-gb) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8B117 Safari/6531.22.7)

    As above
     
  2. QuarterSwede macrumors G3

    QuarterSwede

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  3. gravytrain84 macrumors 6502a

    gravytrain84

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    #3
    So whats this mean? Apple can not patch this?
     
  4. QuarterSwede macrumors G3

    QuarterSwede

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    #4
    Correct. It's a physical flaw. The only way they can fix it is with a hardware revision.
     
  5. OnTheZone macrumors regular

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    Apr 1, 2009
    #5
    I don't believe it can't be patched but i could be wrong. There probably just hiding there hack behind walls for 4.2 or when ever 5.0 comes out.
     
  6. Night Spring macrumors G5

    Night Spring

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    #6
    Apple would need to make new hardware to patch it. Meaning existing devices cannot be patched. However, they could start making new ones tomorrow that cannot be jb with limera1n.
     
  7. Cinemagic macrumors 6502

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    Sep 26, 2007
    #7
    Limera1n CAN be patched. Geohot used a known exploit that had been previously discovered and used by comex. There will likely be a iOS 4.1.1 released before 4.2 that will patch the exploit used by limera1n. SHatter exploit that was to be used in greenpois0n was a bootrom exploit for A4 processor devices only. This exploit could not be patched with a firmware update. That's why Greenpois0n (using SHatter) was only for iPhone 4, iPad and other 4th generation devices only. 3GS, 3G and 2G would not have been able to be jailbroken using greenpois0n, as it was going to be originally released. Greenpois0n is being re-written to use the comex exploit that geohot used in limera1n.
     
  8. Bleak macrumors member

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    Sep 7, 2010
    #8
    No it can't be patched, the only thing closing the hole discovered by comex would accomplish is making the jailbreak tethered instead of untethered. You'd still have jailbroken device. Again, limra1n CANNOT be patched.

    edit: for those not in the know
    Tethered means that every time your iphone completely dies, you have to plug it into a computer and run the jailbreak program again. Once you do that you're good to go.

    Untethered means that even if your iphone dies, you don't have to rerun the program again.
     
  9. terraphantm macrumors 68040

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    Jun 27, 2009
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    Pennsylvania
    #9
    Limera1n's bootrom exploit cannot be fixed until Apple releases revised hardware. Unfortunately, this bootrom exploit results in a tethered jailbreak, and need "assistance" at the userland level to become untethered. These userland exploits can be patched, so one would have to live with a tethered jailbreak until one of the devs release another untethered exploit.
     
  10. goobot macrumors 603

    goobot

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    #10
    no greenpois0n always had comex's exploit. tho it had a different bootrom exploit than geohot. geohot's bootrom exploit worked on the iphone 3gs and ipod 3g when SHatter didn't. so they used his. comex's exploit in addition to a bootrom exploit allows for a full untethered jailbreak. just a bootrom is tethered. greenpois0n was gana use comex's exploit before geohot even jumped into this.
     
  11. strodda macrumors regular

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    Jul 29, 2010
    #11
    The jailbreak itself cannot be patched. Limerain will always work on all phones that are currently released. Once apple releases new hardware, like they did with the 3GS, then and only then, will limerain be fully patched. When 4.1.1 is released, it will fix the hole found by comex, meaning limerain will still work, but it will be a tethered break only.
     
  12. lucifiel macrumors 6502a

    lucifiel

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    #12
    I'm pretty sure that limera1n is also a bootrom exploit as well.
     
  13. Cinemagic macrumors 6502

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    #13
    Thanks for the correction.
     
  14. TMar macrumors 68000

    TMar

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    Jul 20, 2008
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    Ky
    #14

    While they can't patch the bootrom, firmwares can change the iboot which is were the JB takes place. This is fine as long as you can downgrade. This is why old bootrom 3gs have to be pwned on 3.1.2. So if they started shipping 4's with a patched iboot (4.2?) that isn't JB it doesn't matter if you have a bootrom exploit.

    To be more precise a untethered is a bootrom/iboot exploit while tethered is just an iboot one.
     

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