Download Xbox 360 NXE Full Dashboard + Avatars [Offline Install]
This is the latest NXE which was released on Xbox Live in April 2009.
Upgrading to this version of the dash should fix any problems such as the HDMI audio bug and getting asked by games to update your dashboard even though you already have.
You can download this and place on a DVD (or even USB drive works) and install the NXE without connecting to Xbox Live. Great for helping friends who arent on Xbox Live experience the NXE or updating your own consoles which you don't connect to Live for any reason.
Instructions:
To create a DVD or CD:
1. Save the download anywhere on your computer.
2. Place a blank disc in your burner.
From Windows Explorer, select Open Writable CD Folder Using Windows Explorer or open the CD drive icon.
3. Open (double click) the rared $SystemUpdate.rar folder and drag the contents of the zipped folder to the root of the CD Folder. If the CD write window doesn't open by default, drag and drop the folder onto the CD/DVD RW drive.
InsaneNutter has created a video to try and help those of you who are having problems:
Download:
Download the Xbox 360 NXE Full Dashboard + Avatars [Offline Install] - April 2009