3Com Corporation
Firmware Upgrade Notes

This file contains the following topics:

 - FIRMWARE UPGRADES UNDER DOS
 - FIRMWARE UPGRADES UNDER WINDOWS 95 AND WINDOWS NT


CAUTION: Be sure you use the correct firmware image file for
         your card. Using the wrong firmware image file will
         make your card inoperable.  This is the latest firmware file 
         for the 3C562/3c562b/3c562C-TP LAN+Modem PC Card.  It is not to be
         used on any other version of the LAN & Modem PC Cards	

Perform the upgrade from the hard drive. Before starting the
procedure:

 - Disconnect the cables from the LAN+Modem card.
 - Connect to a reliable AC power source (do not use battery
   power only).  

CAUTION: Interruptions during the download procedure may corrupt
         the data and damage the card.

FIRMWARE UPGRADES UNDER DOS

On DOS platforms, the FLASHROM utility works with Card Services
and Intel PC Card (and compatible) controllers. If your laptop
does not have a suitable card controller, be sure Card Services
is loaded. FLASHROM will not run with the network drivers, but
the 3Com Configuration Manager, 3CELCM.EXE, must be loaded to
enable the modem.

 1. Turn on the computer and boot DOS without loading the
    network drivers.

 2. Return to the top (root) directory of drive C by typing:

    cd \ [Enter]

 3. Create a temporary working directory and change to that
    directory.

 4. Copy the FLASHROM program to drive C by typing:

    copy a:\flashrom.exe [Enter]

 5. Copy the correct firmware image file to drive C.
    For example, if you have the 3Com EtherLink III LAN+28.8
    Modem PC Card, type:
    
   copy a:\3com.rom [Enter]

 6. Load 3CELCM.EXE to enable the modem. Type:

    3celcm [Enter]

 7. Verify that the FLASHROM.EXE program can see the card. Type:

    flashrom version [Enter]
    This should display the current version of the LAN+Modem
    card firmware. If the program cannot find the card, 
    reconfigure the card and try again.

8. Run the FLASHROM program to upgrade the firmware. Upgrade
    the 28.8 LAN+Modem card with the V113N.ROM image file,
    for example, by typing:
    flashrom V113N [Enter]
    FLASHROM displays a message when the upgrade is complete.

After upgrading the firmware, reboot the PC before using the
LAN+Modem card.

FIRMWARE UPGRADES UNDER WINDOWS 95 AND WINDOWS NT

For firmware upgrades under Windows 95 and Windows NT, the
ELPC3X.VXD driver must be loaded to enable the COM port. Unplug
the cables so the card is not connected during the upgrade. To
upgrade your firmware under Windows 95 and Windows NT:

 1. Open a DOS window.

 2. Return to the top (root) directory of drive C by typing:

    cd \ [Enter]

 3. Create a temporary working directory and change to that
    directory.

 4. Copy the WINFLASH program to drive C by typing:

    copy a:\winflash.exe [Enter]

5. Copy the correct firmware image file to drive C.
    For example, if you have the 3Com EtherLink III LAN+28.8
    Modem PC Card, type:
    
   copy a:\3com.rom [Enter]

 6. Run WINFLASH from the Start menu, Explorer, or File Manager.

7. Click on Locate Card.

    This finds the card, enables the COM port, and displays
    the current version of the LAN+Modem card firmware. If the
    program cannot find the card, reconfigure the card and try
    again.

8.Click Upgrade to upgrade the firmware on your LAN+Modem card.

9. Select the firmware image file (for example, V113N.ROM
    for the 28.8 LAN+Modem card).

13. Highlight the file name and click OPEN.

      This will start the firmware upgrade.

After upgrading the firmware, reboot the PC before using the
LAN+Modem card.