Toggle the Hold switch on and off (Slide it to Hold, then turn it off again.) then press and hold down the Menu and Center (Select) buttons until the Apple logo appears, about 6 to 10 seconds. Via Apple.
This words for the Fifth Generation iPod (also known as iPod with video), iPod nano (Second Generation), iPod nano, iPod with color display (iPod photo), iPod (Click Wheel), iPod mini, and
iPod mini (Second Generation)
