iPhone has no OS! i think? Help :S

[andretouch]

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...

[mkrishnan]

Use DFU mode.

http://www.iclarified.com/entry/index.php?enid=1034

[jlake02]

Yeah, DFU it

[rotobadger]

Sorry for your trouble but, seriously, you need to search. The answer to your problem is literally the post above this one in this forum! Here's the link (or you can hit your back button and click on the post above yours).

http://forums.macrumors.com/showthread.php?t=597089

EDIT: Ok, of course the thread has moved as people post but you get the idea. When I posted this it was the post above yours.