The iPhone hacking community has done it again, it has only been a few hours since Apple released iPhone firmware 2.1 which includes many bug fixes and improvements, and we have news that they have figured out a way to jailbreak iPhone firmware 2.1.
ipineapple, one of our readers here at iPhone Hacks, had posted a link to a step-by-step guide to jailbreak 1st generation iPhone and iPhone 3G running iPhone firmware 2.1 for Windows users in the comments.

