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How come limera1n can't be patched?
- Thread starter JordanDevine
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Correct. It's a physical flaw. The only way they can fix it is with a hardware revision.
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.
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.
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.
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.
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.
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.
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.