Ok guys I recently updated to 3.0 and jailbroke. Everything was fine, I was just downloading all the cydia stuff again, I then downloaded SBSettings, then I went to power off so I could power up again to kinda like "reset" you know. I turned off, then when I turned on it was taking a while, it was showing the apple logo then it just went to a black screen however it was still on cuz the backlight was on. I can turn off but when I turn on it repeats the process. What should I do? I never had a problem with my 2.2.1 jailbreak. Thanks EDIT: It still gets detected by iTunes and every now and then when I leave it on the blackscreen it comes up with the apple again and shows the "circle working sign". Also, it sometimes flashes white and resets.