Updating ipod nano software
Next to the word Version is information that describes the software version installed.
To see which version of the i Pod system software is installed on an i Pod nano or i Pod classic, choose Settings→General→About from the i Pod nano Home screen or Settings→About from the i Pod classic main menu.
If your version of i OS is current, the screen tells you so, and you don’t see those buttons.
To see which version of i OS is installed on your i Pod touch, choose Settings→General→About.
After you have activated your i Pod nano, i Tunes will periodically check for software updates (or firmware updates, as they are called).
Next to the word is information that describes the software version installed.
You can also determine the software version on your i Pod touch, i Pod nano, i Pod classic, or i Pod shuffle by using i Tunes.
The fastest way to find out if the version of i OS on your i Pod touch is the most recent version, choose Settings→General→Software Update.
If a new version of the software is available, you see the Download and Install button.Apple doesn't release updates to the operating system that powers the i Pod as often as it does for the i Phone.