AMX NetLinx Master-Ethernet Card/Module NXC-ME260 - Manual (Page 37)

Communication and Firmware Update
31 NXC-ME260 NetLinx Master-Ethernet Card/Module
12. Repeat steps 8 - 11 again (the last component will successfully be installed).
13. Click Close once the download process is complete.
14. Right-click on the System entry and select Refresh System. This establishes a new connection
to the System and populates the list with devices on your system.
The OUTPUT and INPUT LEDs alternately blink to indicate the Master is
incorporating the new firmware. Allow the Master 20 - 30 seconds to reboot and
incorporate the new firmware.