Compaq AlphaServer GS60 Operation Manual page 309

Issue the display command. The display indicates an unknown device — LFU is
unable to recognize the device type. You can identify the unknown device by
looking at the physical configuration.
Display shows that the unknown devices are in slot 2 of the first XMI bus and
slots 2 and 12 of the second XMI.
Issue the command update unknown*.
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Updating Firmware B-15