Apple has released iPod Updater 2006-01-10 through the software update utility. Here is the description provided by Apple for this update:
iPod Updater 2006-01-10 delivers:
iPod Software 1.1 for iPod
iPod Software 1.1 for iPod nano
iPod Software 1.2.1 for iPod with color display
iPod Software 1.4.1 for iPod mini
iPod Software 3.1.1 for iPod with Click Wheel
For all other iPod models, iPod Updater 2006-01-10 contains the same software versions as iPod Updater 2005-11-17.
Important: After downloading the iPod Updater software, connect your iPod to your computer and launch the iPod Updater application. If iPod Updater determines that your iPod needs to be updated, click the Update button to install the latest software on your iPod.
Features of iPod Software 1.1 for iPod, and iPod Software 1.1 for iPod nano:
Support for the iPod Radio Remote
Changes to iPod Software 1.2.1 for iPod with color display, iPod Software 1.4.1 for iPod mini, and iPod Software 3.1.1 for iPod with Click Wheel: