Appendix E - Upgrading The Modem; Upgrade Overview - Multitech MT5656ZDX User Manual

Appendix E - Upgrading the Modem

Your modem is controlled by semi-permanent software, called firmware, which is stored in flash memory. Firmware is
nonvolatile; that is, it remains stored in memory when the modem is turned off. However, it can be changed by either the
manufacturer or the user as bugs are fixed or new features are added.
Since the firmware in your modem is stored in flash memory, you can upgrade it yourself in a few minutes by using the
following procedures.

Upgrade Overview

The upgrade procedure consists of the following steps, which are described in greater detail in the following sections.
1. Identify the model number and firmware version of your modem.
2. Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has the
current firmware, there is no need to update it.
3. Download the upgrade file for your modem.
4. Extract the firmware .HEX file and the appropriate flash upgrade program from the file you downloaded.
5. Document and clear your stored parameters.
6. Upgrade the modem's firmware using the .HEX file and the flash upgrade program.
7. Restore your parameters.
Step 1: Identify the Modem Firmware
You must know the model number and firmware version of your Multi-Tech modem to know whether or not you should
update it.
1. Run your favorite terminal program. If you are using Windows 95, 98, 2000 or Windows NT, you can use
HyperTerminal. If you are using Windows 3.1, you can use Windows Terminal.
2. In the program's terminal window, type AT&F. Even if you cannot see the AT&F command on your screen,
be sure to type it completely, and then press E
AT&F command.
3. Now type ATI3 and record your results. The firmware version should appear first in the response, which
should look similar to the following:
V2.300G-V90_2M_DLS
Step 2: Identify the Current Firmware Version
Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has the current firmware, there
is no need to update it.
1. Using your favorite Web browser, go to http://www.multitech.com/support/MultiModemZDX/firmware.asp.
2. Scroll down the table to your modem model number.
3. Look at the firmware version number for your modem.
4. If the firmware version number matches the firmware version number found in "Step 1: Identify the Modem
Firmware," your modem has the current firmware version, and does not need to be updated.
5. If the firmware version number is greater than the firmware version number found in "Step 1: Identify the
Modem Firmware," your modem has an older firmware version. Continue with "Step 3: Download the Up-
grade File."
Warning: The first digit of the new firmware must match the first digit of the old firmware, or the modem may
not work properly; e.g., if your current firmware version is 4.16, replace it only with 4.xx firmware, not 6.xx
firmware.
Step 3: Download the Upgrade File
1. If you are not already at the MultiModemZDX firmware page of the Multi-Tech Web site, follow the proce-
dure in "Step 2: Identify the Current Firmware."
2. Download the upgrade file for your modem by clicking its name, and save the file in a temporary folder on
your hard disk.
3. In the same section of the Web page, download the Flash Wizard utility for your operating system by
clicking it, and save it in the same folder.
Multi-Tech Systems Inc. MT5656ZDX Series User Guide
Appendix E - Upgrading the Modem
. If the modem does not respond with OK, repeat the
NTER
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