Comtech EF Data CDM-550T - Manual (Page 109)

Chapter 13. FLASH UPGRADING
The CDM-550T eliminates the need for updating firmware by physically replacing Electrically-
Erasable Programmable Read-Only Memory (EPROMs). Instead, the CDM-550T uses ‘Flash
memory’ technology internally. This makes software upgrading very simple, and updates can now be
sent via the Internet (Figure 13-1), via E-mail, or on CD.
• New firmware can be downloaded via the Internet to an external PC.
• The upgrade can be performed without opening the CDM-625 by simply connecting the unit
to the serial port of a computer. The cable to connect the PC to the modem is the same as is
used for normal RS-232 remote control, and comprises 3-wires between 9 pin ‘D’ type
female connectors. This is shown in Appendix A.
• The firmware update is transferred, via File Transfer Protocol (FTP), to the CDM-550T.
Figure 13-1. Flash Update via Internet
Comtech EF Data 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
13–1