Your Zune device displays "NG" on the screen when you try to update the device software

SYMPTOMS

When you try to update your Zune device software, the Zune device restarts and displays the following error message on the screen:

This problem occurs because the update process was not completed successfully.

Restore your device software. For more information about how to restore your Zune device software, click the following article number to view the article in the Microsoft Knowledge Base:
927001 (http://support.microsoft.com/kb/927001/ ) How to restore your Zune device software
If this step does not resolve the problem, go to step 2.
Register your device. To do this, visit the following Microsoft Web site:
http://service.zune.net (http://service.zune.net)
Note On this Web site, you can submit a request for service if your device is under warranty and if it qualifies for service.