Just after the Apple released iOS 4.1 to public, an iPhone hacker pod2g (of Chronic Dev Team) has discovered a new bootrom based exploit to jailbreak all devices on iOS 4.1 firmware.
Those who don’t know, Bootrom exploit, which is unlike userland exploit JailbreakMe is a low level-bootrom exploit, that can’t be fixed by Apple without a new hardware release of iPhone 4, iPhone 3GS, iPad and the iPod touches with new bootroms. Just firmware update will not going to patch the bootrom exploit.
pod2g, cpich3g and Musclenerd tweeted in the following series
iPhone 4G iBSS 4.0.1: iv=91f94e5d726a2d2f2c7ffad58d4f3b77 key=d05c3c40db40e738926f811b8b1314038d26096c4102461698a49098c47a3fe6
congrats to @pod2g for the latest exploit and also @p0sixninja who have been trying for months.
Crazy timing that @pod2g got latest exploit just as 4.1 went public (lots of work left…keep away from 4.1 for now!)
If you want to test the validity, use the keys provided to decrypt the 4.0.1 firmware dmg – while this is indeed excellent news it most likely means we may have to wait some time for a Jailbreak for 4.1 while the Dev team mash out the exploit – I believe they had userland exploits in hand which would have been quick to deploy, but it is pointless wasting them if they can use this bootrom exploit which pretty much makes jailbreak stable until Apple manufacture devices with new hardware.