NEC Express5800/R310e-E4 Maintenance Manual page 39

Chapter 1 Maintenance
6. When you click OK on confirmation dialog box, the firmware update starts.
When the firmware update is completed, check that the firmware revision is modified as you expect.
7. When BIOS update completes, choose Update, and then click the Execute button of Jump Switch.
( "Jump Switch" can be carried out to module of "Power supply stopped". )
8. When you click OK on confirmation dialog box, the CPU module of which BIOS has been updated starts,
and the other CPU module stops.
9. Click the Execute button of Firmware Update on Update screen of the CPU module in halt status.
Express5800/R310e-E4, R320e-E4, R320e-M4, R310f-E4, R320f-E4, R320f-M4 Maintenance Guide (Windows)

Tips The update result can be checked by Status Information of General in target
component ("Firmware update complete" is displayed). In addition, the result of the
update is reported by the ft server as an alert.

It takes about 15 minutes until the update of either of CPU module is completed.
4. Maintenance of Express5800/ft series
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