You may need to restore an iPod because it has stopped operating properly or you wish to clean the iPod hard drive of old files. Restoring the iPod will delete all files on the device and restore the device to the factory settings. When restoring an iPod you may encounter a 1439 error code. This code indicates that an unknown error has occurred. This error may occur for several different reasons including outdated USB drivers and a outdated version of iTunes.
Download the latest version of iTunes. Click on the download link and follow the installation prompts.
Disconnect the iPod from the computer and any additional peripheral devices connected into the USB ports, with the exception of the mouse and keyboard. Restart the computer.
Reconnect the iPod to a USB port. If possible connect it to a different USB port than that which was used in the previous restore attempt. iTunes should recognise the device and display the iPod device icon the left pane.
Make sure disk use is enabled in iTunes. Select the iPod device icon in the left pane. Select the "Summary" tab in the right pane and check "Enable disk use."
Restore the iPod again. To restore, launch iTunes and select your iPod device in the left pane. Hit "Restore," and iTunes will restore the device. After restoration is complete, iTunes will ask you to name the device and select syncing preferences for the iPod.
Update the USB driver software in Windows if the error still occurs. To update the driver, click on the "Start" button and enter "Device Manager" in the search field. Click on "Device Manager" and click on "Update Driver Software." Select "Search automatically for updated driver software." Windows will search and update the driver software. If it can't find it, hit the "Back" button and select "Browse my computer for driver software." Type "C:\Windows\INF" in the search for driver field and hit "Next." The system should update the driver now.
If using Windows XP, you may try reinstalling the iPod dll files. To reinstall, copy the dll files and paste them into a Notepad file. Save the file as "appleipod.bat" and save it to the desktop. Double-click on the newly created "appleipod.bat" file. The file will open and disappear. Then try restoring the iPod.