Chapter 13. Flash Upgrading - Comtech EF Data CDM-550T Manual

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Chapter 13.
FLASH UPGRADING
The CDM-550T eliminates the need for updating firmware by physically replacing
EPROMs. Instead, the CDM-550T modem uses 'flash memory' technology internally,
and new firmware can be uploaded to the unit from an external PC. This makes software
upgrading very simple, and updates can now be sent via the Internet, E-mail, or on disk.
The upgrade can be performed without opening the unit, by simply connecting the
modem to the serial port of a computer.
The cable to connect the PC to the modem is the same as is used for normal EIA-232
remote control, and comprises 3-wires between 9 pin 'D' type female connectors. This is
shown in Appendix A.
Comtech EFData will distribute a free software utility, that is designed to run under
Windows 3.1x, Windows 95/98 or Windows NT. This utility program is called
CCCFlash.exe, and should be copied to the user's computer hard disk. Along with this,
the user will receive the latest firmware file (for example, 550TV102.ccc), which the user
should copy to the same sub-directory (folder).
The user then connects the modem remote control port to an unused serial port on the
user's computer, and executes the program. The user should follow the instructions
presented on the screen, and the upload will take place automatically. Following the
successful upload process, the modem will automatically re-start, running the new
version of firmware. During this process, the non-volatile RAM, storing the configuration
of the modem, will be erased, so the user is then required to re-enter the desired
configuration parameters.
Full on-line help is provided with CCCFlash.exe, but if users experience a problem, or
have a question, they should contact Comtech EFData Technical Support.
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