Question : Having a problem seeing USB devices after installing libusb - NO KEYBOARD OR MOUSE !!

I was working on downgrading my iPhone from 4.0 to the previous firmware, 3.1.3 so I could jailbreak it before putting it on ebay.

(Have to pay for my shiney new iPhone 4 somehow :)

There's a way to pull the phone into and out of recovery from the command line. My Mac wouldn't see the phone, so I tried it on a Win7 PC.

You have to install Libusb to do so. I have never seen formal documentation, but a colleague told me that app can have adverse affects on the way Win communicates w/ USB devices and could potentially stop my keyboard and mouse from working.

Does anyone know how to reverse or resolve this ???

Answer : Having a problem seeing USB devices after installing libusb - NO KEYBOARD OR MOUSE !!

here's how to get to system restore: http://www.technospot.net/blogs/how-to-do-a-system-restore-in-windows-vista-and-windows-7/

note: this will only affect system files not data