Apple today released Xserve EFI Firmware Update 1.1.
About Xserve EFI Firmware Update 1.1
This update fixes several issues to improve the stability of Xserve computers.
To complete the firmware update process, perform the following steps:
1) Locate Xserve EFI Firmware Update.app in /Applications/Utilities and double click on it.
2) Follow the onscreen instructions.
If you will be doing headless updating please visit
http://support.apple.com/kb/HT1877
After the firmware is successfully applied to your Mac, your Boot ROM Version will be:
XS21.006C.B06
You can confirm the version of the Boot ROM installed on your computer using System Profiler.
For further information on this Update, please visit this website:
http://support.apple.com/kb/HT1557
The update requires Mac OS X 10.5.2 or later and weighs in at 1.6 MB.