NEC Express 5800 User Manual page 493

(7)
(7) Indicate the completion of update.
IMPORTANT:
 In A1080a-D model, the version of Management Firmware in both
servers must be the same.
IMPORTANT:
 NEC unrecommends the firmware update operation to you while
the DC power is on because the application of the OS may not
work well.
 In A1080a-D model, if another server is starting up, don't
execute firmware update operation until the status of another
server will be "OS Running or EFI Manager Booted".
 Don't execute firmware update operation until the status of this
server will reach to "Stopped" after power-off.
 In A1080a-D model, if another server is stopping, don't execute
firmware update operation until the status of another server will
reach to "Stopped".

When the firmware update completed, please clear the cache of
the web browser.
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