The iPhone Dev Team recently revealed that a fatal flaw in the iPod Touch 2G’s boot ROM makes the device open to jailbreak regardless of any firmware updates that Apple may release. In other words, Apple can do nothing to jailbreak-proof the iPod Touch 2G.
An entry in the iPhone wiki explains the exploit as well as additional info. Apparently the flaw has been exposed for some time already, but the unlockers were hoping to keep a lid on the flaw until the iPhone 3G is released. This is obviously to prevent Apple from finding out and fixing the flaw before the iPhone 3G is released so that people can immediately enjoy a jailbroken iPhone 3G.
However, a company called NitroKey recently began selling a slipstream software that unlocks the iPod Touch 2G using the exact same flaw. Not wanting to have people pay for something that they would soon release for free, the unlockers (I wish I had names, really, this is so awkward) chose to make the flaw public.
[via The Boy Genius Report]