I bought a XBOX 360 bundle last month (Jan, 2012). When I connect the XBOX 360 S to my vidoe/audio system through HDMI, the audio is 24K Hz. The sound is not very good. When I Google the XBOX specification, I found this page: http://support.microsoft.com/kb/906660. It says that the XBOX supports 48K Hz only. Does the spec change recently?
How can I check the my XBOX software version? I believe it did an automatic update when I turn it on the first time. However, I can not find the update menu anymore.