Using flash to upgrade modem firmware – Multi-Tech Systems MT5600ZDX User Manual
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Model MT5600ZDX
Reading a Message
When you log on, the BBS will tell you if you have a personal message
(mail). At the prompt Would you like to read it now?, type R to read the
message. This is the only point at which you can read your mail, since you
cannot read any messages from the Message Menu.
Leaving a Message
The Multi-Tech BBS has no public discussion areas. To leave a personal
message, select the Message Menu by typing M at the Main Menu. Type E,
then press RETURN to select the Sysop conference. Enter the name of the
recipient (or Sysop), the subject, and the message text. Press ESCAPE to
finish, then type S to save the message and exit. To abort the message at
any point, leave any of the fields blank and press RETURN.
Bulletins
When you log on, the BBS will ask if you would like to view the bulletin
menu. The bulletins are menu-driven; to read a bulletin, enter its number.
You can also access the bulletins by typing B at the Main Menu.
Using Flash to Upgrade Modem Firmware
The linear flash memory downloader in the modem firmware allows flash
memory connected to the modem external memory bus to be upgraded
with revised modem firmware. This process transfers (uploads) the
upgraded modem firmware (data) from the host computer to the modem
which transfers (downloads) the data to the flash memory device. Note that
this downloader function must be provided in modem MCU firmware
initially installed in external flash memory, i.e., the downloader does not
support the programming of blank flash memory. Programming the flash
memory device is a two-step process:
A. When the AT** command is issued, the modem firmware boot loader
is invoked and you will first load a flash load module (FLM) into the
modems RAM. The FLM contains the programming algorithm for the
flash memory device being programmed and any messages that may be
sent during the load process.
B. Load the new modem firmware which the FLM will then program into
the flash memory device.
Flash Procedure: