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Chapter 4. UPDATING FIRMWARE
4.1 Firmware Update Overview
Make sure to operate the CDM-840 with its latest available firmware.
The CDM-840 Remote Router is factory-shipped with the latest version of operating firmware. If
you require a firmware update, you must contact Comtech EF Data Product Support.
Firmware updates may be applied to an in-service CDM-840 without having to remove the
covers of the unit chassis. Use the CDM-840 to update the firmware:
• Obtain the firmware update archive file from Comtech EF Data Product Support.
• Establish the proper communications link for acquiring the firmware update archive files by
directly connecting a user-supplied Microsoft Windows-based PC to the ‘ETHERNET |
MANAGEMENT | FE’ 10/100 Fast Ethernet port and the 9-pin serial ‘CONSOLE’ port located
on the CDM-840 rear panel.
• Use Windows Command-line to transfer, via File Transfer Protocol (FTP), the extracted
firmware files from the User PC to the CDM-840 standby firmware image.
• Use the CDM-840 HTTP (Web Server) Interface to configure the modem to operate using the
updated firmware image.
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