The following models are compatible:
● iPod 5th Generation version 1.2.3
● iPod Classic - version 1.1
● iPod Touch - version 2.1*
● iPod Nano - 1st generation version 1.3.1
● iPod Nano - 2nd generation version 1.1.3
● iPod Nano - 3rd generation version 1.0.2
● iPod Nano - 4th generation version 1.0.4
● iPod Nano - 5th generation version 1.0.1

* Some features of this iPod may not be fully functional.

Make sure that your iPod firmware is updated to the version indicated above.