Tonight has been a fairly bad night when it comes to jailbreaking news as all of the popular hackers in the jailbreak community are discovering that Apple engineers have successfully patched two jailbreaking exploits. First iH8Sn0w tweeted the following: Confirmed: limera1n is patched in iPad 2. Then MuscleNerd ended up confirming that not only was GeoH0t’s limera1n exploit patched but p0sixninja’s SHAtter exploit was also patched by Apple engineers in March 2010 itself. This was discovered as MuscleNerd found the iPad 2 running a bootrom version iBoot-838.3 as compared to iBoot-574.4 found in the first generation iPad. iPad2 bootrom version iBoot-838.3 means it was compiled March’10. Seems geohot guessed right: limera1n was already closed Early testing also seems to show at least one thing SHAtter depends on was gone by March 2010 too This means any early iPad2 jailbreaks will have to be purely userland @fr0st SHAtter can’t work at all with the “thing” I referred to gone @hooners96 right. I guess this is a bit of a win for Apple engineers…they fixed both holes long before either exploit was developed. The Difference Between a Bootrom and a Userland Jailbreak Bootrom exploits are primarily used to jaibreak the iOS device for life. It can’t be fixed by Apple without a new hardware release of an iOS device (like an iPad 2). Unlike a userland jailbreak, which where just a firmware update can patch the issue. The iBoot-574.4 bootrom is on the A4 chip (S5L8930) used in the first generation iPad, iPhone 4, Apple TV 2G, and iPod Touch 4G while the iPad 2 is carrying a new revised iBoot 838.3 on the A5 chip (S5L8940). Since the bootrom has been revised, as of right now the iPad 2 can only be jailbroken via a new userland jailbreak. In addition to this, @comex is confirming that his best kernal bug has also been closed in the iOS 4.3 firmware update. The jailbreak community must now discover a new userland exploit to jailbreak the iPad 2. As of right now, our entire hope relies on Stefan Esser, who demoed a new untethered jailbreak exploit for iOS 4.3 on an iPad 2 just yesterday. It was even recently confirmed that he is not waiting until the release of iOS 4.3.1 to release his exploit, but more so just waiting until he can refine the exploit for prime time usage. We will update you as more information regarding the topic trickles in from the jailbreak community. You can stay tuned by following us on Twitter and/or subscribing to our RSS feed. [Source: iH8Sn0w (Twitter), MuscleNerd (Twitter) ] Authors:

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