i upgraded my first generation iPhone to 2.1 using quickpwn, and jailbreakin it. it was working all fine. but then i wanted to delete all the contacts and everything, so i went in the settings and clicked on erase all content and settings. It did it for one hour, but now the iPhone won't start anymore, it just shows the apple logo, then restarts and restarts, like the OS got deleted. And it wont sync with the computer at all. I'm kinda screwed 🙁, If anyone can help, please do! lol...