For Windows Operating System:
In case these dialog boxes do not appear after connecting the iPod device to the computer then check whether the latest version of iTunes is installed on your system or not. If not, then do install the latest version of iTunes first. Moving ahead, click ‘OK’ button on the dialog box thereafter the dialog box provides the option of either ‘Update’ or ‘Restore’ your iPod device. Choose and click the ‘Restore’ button. After the restoration process gets completed if the iPod device is still displaying the same error then another repair solution must be looked for. One more thing that can be done is ‘Reset the iPod’. Restore the device in iTunes after choosing reset on iPod.