Help!! iPhone summerboard keep freezing and restarting!!

Just now I was using Installer.app to try to install sth new..
And I installed a soundset, but it failed the installation..
So then I quit installer by clicking the menu button, but it doesnt really quit..
After a minute, it quit. But then i see the loading icon showed up, and the iphone freezes.. and then it somewhat like restart.. and it freezes again.. and restart again..
I tried to reboot the phone by holding the sleep button and the menu button. But reboot doesnt help...
Please help... iTunes doesnt detect the iPhone too..

**Fixed by restoring iphone.

Enabling 'dim wallpaper' in summerboard is known to cause tons of crashes. Make sure that option is set to 'off'.

It just keep freezing and restarting endlessly.
I didnt have a chance to go into an app..
The only method I can think of right now is restoring it..

Power down, not lock/unlock, your phone and give it a shot. Then open summerboard. If that doesn't work, then you'll probably need to restore and stay away from summerboard.

Make sure you have BSD subsystem installed.