Fujitsu ScanSnap N1800 Operator's Manual page 188

4. Press the [OK] button.
The system update process is started.
After the system has been updated, the scanner is restarted.
ATTENTION
Wait for the system to restart.
During system update, do not hold down the power button for 4 seconds or longer, as
it may cause the scanner to function abnormally.
HINT
The network interface connection will be lost when the scanner is restarted to complete
the system update. To continue with other settings, wait a short time for the scanner to
restart, then try reconnecting with the Admin Tool.
4.16 Maintaining the System
188