Diagnostics Test: Please plug FW?

Ok, so I had been having some problems with my iPod in that when I tried to connect it to my computer, iTunes would freeze, "My Computer" wouldn't see it, etc. So one of the things I tried to do to solve this problem was see if there was something wrong with the iPod itself. I currently have the 80GB silver iPod classic. I reset the iPod using the menu and action buttons, and then put it into diagnostic boot with << and action button. I first selected the auto test, passed the quickscan, passed the keypad test, passed the wheel test, then the hold switch test comes on. I turn the hold switch on, then off, and test detects it with the 0 and 1, then hit menu to continue. Then the HP detect test, I plugged in the headphones until it said 1, and then uplugged them. Pretty much, all you do to go through these tests is do what it says so that it can read that the function is there, and then read that you removed that function, such as the HP (headphones). However, now I get to the Accessorize test. Plug in the USB cord to a power source (computer or wall outlet works) and USB_DETECT=1, and then to 0. But then it asks me to please plug FW. Which I'm assuming is FireWire. But isn't that usually used for older models? I don't have and never have had a FireWire cable for this iPod. How to pass this test? All other forums I've looked up concerning this message, most people were not trying to do the diagnostics test and had no clue what it was and what to do with it. Am I supposed to go buy a FireWire adaptor just to do this diagnostics?