Since you are an expert, can you explain the zero day that would be needed to get Stuxnet onto the SCADA/first computer?
Obviously the final product might not have used this iPod. It was a huge operation on many levels with failed projects. This iPod also obviously might not have been for recording, since that's a level one misdirect, oh it's secret spy recording device, person who's watched to much James Bond.
But how did they do the 'usb' zero day since you know it isn't a iPod?