iPod Classic 120GB - iTunes Won't update my iPod software to version 2.1

I have a 120GB iPod classic with software version 2.0.1 bought in 2009.

I want to upgrade the software to version 2.1 so I can have the voice memo feature on my iPod.

I am running iTunes version 10.0.1

When I ask iTunes to check for a software update for my ipod it says, "This version of the iPod software (2.0.1) is the current version."

This is obviously not true.

I've tried to download the software update directly from apple.com ( http://docs.info.apple.com/article.html?artnum=120229 ) but it gives me a full download of iTunes 10.0.1 which I already have installed.

I don't understand why iTunes will not update my iPod's software. I don't understand why the iPod didn't come with the 2.1 version already installed. According to the download page, this version was released in 2003.

Can anyone please explain to me why or more importantly, HOW I can get the ipod software updated when iTunes fails to do it?

Thanks in advance!