I have this really weird problem

I restored my iphone using iTunes but after that i got the iTunes and usb logo on my iphone 3g screen. I cant do anything in the iphone except emergency calls. I tried jailbreaking using quickpwn but it works untill the last step put it into DFU mode. I did this in many phones but it doesnt work on this one and I tried several pc's and repeated it many times and I always get this msg " the device has connected in the wrong mode this can be......"

any ideas?

Thread moved & renamed (old title: stuck with the beuitiful itunes and usb logo on iphone 3g : ( )

One more thing

I can restore my phone but even after restoring i get the same logo with the msg No SIM card installed

is there any way to turn around this?
(turbo sim doesnt work)

Are you on an official carrier?

If you are, then dont select the Activate option.

Restore it to the official firmware, activate it in iTunes. Then QuickPwn it.

Try different USB Ports, and try a few times, its not easy to get the phone into DFU Mode on your first try.