We have got some rumors report about Apple patching of LimeRa1n Exploit in newer iOS devices, For all those who don’t know, the current version of Redsn0w uses Geohot’s bootrom based Limera1n exploit to jailbreak all current iOS devices on the latest firmware. Since Limera1n exploit exists in the hardware, only a hardware revision from Apple could have patched it. A member of Modmyi forum said in a post that he bought a new iPad running iOS 4.2.1 and he could not jailbreak it with latest RedSn0w.
Here is the complete story from Modmyi forum:
I made a trip to the Apple Store today to get an iPad for my old lady (Christmas present). She told me she’d love it jailbroken, so I sat down in front of my computer to redsn0w this 4.2.1 iPad.One problem–redsn0w 0.9.6b6 could not upload a pwned iBSS (hanged at the white screen on OS X, upload timed out and rebooted into jailed state with Windows).Furthermore, the device constantly stalls when attempting to dump its bootrom. This leads me to believe the injection vector used via USB has been patched in DFU mode.Case in point: Any iOS device with a serial number xx050 (this week) or higher might be unable to be jailbroken via the limera1n exploit. Slightly older devices may be invulnerable as well.
if these findings are true, Apple might have patched it in the new stock of iPhone 4, 3GS, iPad, iPod touch 4G and Apple TV 2G.
So if your new iOS device comes with serial number xx050, there is a high chance that Limera1n is already patched on this device and you may not be able to jailbreak it with current jailbreak tools.
This report is still not sure to be correct, but soon any member from iPhone Dev Team will definitely report on this news. so stay tuned!
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