iPhone 4 stuck at iTunes logo with USB Cable

[XZeenon]

I recently followed a guide that allows me to upgrade to iOS5 Beta 7, while jailbreaking tethered.

After that all worked out, I went ahead and installed BackBoard form Cydia.

Little did I know, if I tried to use a theme in it, it'd **** up my complete iOS because it wasn't compatible yet.

When I hit install theme, the image went all black, and a little tiny yellowish image popped up in the middle.

Then the iPhone crashed.

I started it up, and booted tethered, and this screen just keeps showing up as the iTunes logo with the USB Cable underneath.

Remove the spaces.

I try to jailbeak again, as well as fix recovery mode, and nothing seems to work.

Does anyone know what to do?

You guys are my last hope.
I am really freaked out right now.

 

[bab2010]

What about factory restoring it. Connect it to your computer, open up iTunes and restore it.

 

[XZeenon]

What about factory restoring it. Connect it to your computer, open up iTunes and restore it.

I've tried that about 25 times today... iTunes keeps crashing during the process.