iPhone 4S untethered jailbreak cracked by Pod2g (aka iPhone jailbreker). He has updated his blog toannounce that he has figure out the untethered jailbreak solution for the A5 processor devices (for iPhone 4S and iPad 2).
Earlier Pod2g reported that there was having some issues with the A5 cache. That issue has been shorted about by him Pod2g and Saurik.
“OK, figured it out, the A5 cache is not a problem anymore.
I sorted it out by doing the untether in a single thread and by flushing all the dcache then all the icache in a row at a strategical point of the process.
It took me like a hundred of tests to find the key. Hard for the nerves. For the tech guys, here is a link explaining issues related to self modifying code ( or code patching ) on the ARM platform : http://blogs.arm.com/software-enablement/141-caches-and-self-modifying-code/
I sorted it out by doing the untether in a single thread and by flushing all the dcache then all the icache in a row at a strategical point of the process.
It took me like a hundred of tests to find the key. Hard for the nerves. For the tech guys, here is a link explaining issues related to self modifying code ( or code patching ) on the ARM platform : http://blogs.arm.com/software-enablement/141-caches-and-self-modifying-code/
Another news : I discussed with @saurik today about the launchd boot process, and he’s found one missing piece of the puzzle I needed to have a perfectly stable jailbreak. He’s definitly one of the best iOS gurus out there. Thank you saurik!”
Just a few days back, pod2g confirmed that the untethered jailbreak for iOS 5.0 was ready – and that work on jailbreaking iPhone 4S had begun in earnest. Citing some processor blockade (iPhone 4S runs the A5 dual-core chip), pod2g said he’d be back with some info soon. And right he was!
After having cleared the cache problem of the A5, there’s only one more step remaining – that of the missing piece of the puzzle mentioned by Saurik (Cydia). It’s just a matter of time – a week at the max –the iOS 5 untethered jailbreak and iPhone 4S untethered jailbreak will be ready for public release!
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