1. ie020706.zip Driver
2. XMODEM.TXT File Contents

XMODEM.TXT Driver File Contents (ie020706.zip)

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                  Courier I-Modem Xmodem SDL Notes

          ----------------------------------------------------

In order to better support users of non-DOS systems, the Courier I-Modem can now
perform flash ROM updates via the Xmodem file transfer protocol found in
most communications software.

IE020706.XMP is the Xmodem mode flash data file. (This is the same
firmware that is in the *.NAC and *.SDL files, but in a different format.) This
is the file that you will send to the I-Modem in Xmodem mode.  The file
supplied with this release is for US/Canada external versions of the Courier
I-Modem.

1)  Go into a terminal application that supports the XMODEM
    file transfer protocol.
2)  Set the port to the one the modem is on.
3)  Type ATI7 and hit <enter/return>.
4)  Make sure your Supervisor rev is 2.0.6 or later. 
    If it is not, you must use a DOS based computer to install the 2.7.6 code
    using GO.BAT.  Follow the directions in INSTALL.TXT.  After updating to a 
    revision of code greater than 2.0.6 you will be able to use the XMODEM file
    transfer protocol for future firmware updates to your modem.

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          Sending New Firmware to the Courier using Xmodem SDL

          ----------------------------------------------------

1.  Start a communications software package, such as Quick Link II or
    MacComCenter.  Adjust the settings, if necessary, so that you can
    send AT to the Courier and get an OK response.  NOTE:  If you are
    sending the file from a Macintosh computer, make sure that you do
    NOT transfer the file in MacBinary format.  In MacComCenter, for
    example, select Setup -> File Transfer and under MacBinary options,
    select "Never MacBinary."

2.  Type AT~X! <Enter>.  The Courier will respond as follows:


SDL Xmodem file transfer - (Y)es (N)o (T)est >


    Responding with 'Y' will begin the file transfer process; responding
    'N' will abort the process and the modem will return to command mode.

    ***********************************************************************
    *                                                                     *
    * Responding with 'T' will begin the file transfer process in a       *
    * "safe test mode".   Test mode will verify the operation of the file *
    * transfer process and the integrity of the .XMP flash data file,     *
    * without actually erasing or re-burning the flash chip.              *
    *                                                                     *
    ***********************************************************************


3.  Respond with 't' to start an integrity test of the XMP file, or
    'y' to begin an actual update of the flash ROM.


SDL Xmodem file transfer - (Y)es (N)o (T)est >t
* Test Mode - Flash ROM will not be modified*
Begin Xmodem file transfer now.
CC


    The Courier I-Modem  will begin sending 'C' characters which are used as part
    of the Xmodem protocol handshaking.

    You may now begin sending the IE020706.XMP file to the Courier I-Modem using the
    XMODEM-CRC or XMODEM-Checksum protocol in your communications software.

4.  After completion of the file transfer, the modem will display a result
    message.


at~x!

SDL Xmodem file transfer - (Y)es (N)o (T)est >t
Begin Xmodem file transfer now.
CC

SDL Xmodem file transfer completed.
Calculating CRC... OK
Resetting modem...OK


    Once you see the OK response to the Calculating CRC and Resetting modem
    messages, your software upgrade is complete, and the modem will reset
    and return to command mode.

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                             IMPORTANT NOTE!

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Many times new code will change the memory locations used by various 
registers.  BE SURE TO ENTER THE FOLLOWING COMMAND AFTER UPGRADING!:

AT&F1*P=0S67=0S68=1S69=0&W

This will restore the factory default template, set S67 to 0 and write
these changes to NVRAM. It will also enable the enhanced auto select and
Turbo PPP features (S68). You may want to make a screen print of your
current settings first  (ATI4I16).



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