SOFTWARE RELEASE NOTES
                          ======================

          Products involved: AXIS 2490 Serial Server

          Release date: 2002-12-05

          Release type: Production

          Software version: 2.11

          Filename: 2490_211.bin

          Last preceding release:  2.10

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

          Upgrade instructions:
         
          Important: 

            1. Make sure that "active applications" such as continouos
	       tranmission of serial data are disabled prior to initiating
	       upgrade.

            2. Make sure to take notes of your application/layout and other 
               settings prior to upgrading since these settings will be 
               lost during upgrade. 

            3. You must be at the command prompt and in the directory that 
               contains the Upgrade File.
               Example: C:\Axis\2490\2_11>

            4. Open an ftp connection to the unit you want to upgrade from a 
               command prompt.
               (Do not use a "windows" based ftp-program for this, use only 
		command line ftp programs!)

            5. Login as root. The default password for the root user is "pass" 
               unless changed by the user. You must be logged in as the root
	       user to flash upgrade the unit.

            6. Change to binary transfer mode by typing "bin" and press enter.

            7. Type "hash" and press enter. (This will allow you to see how the 
               upgrade progresses)

            8. Type the command "put XXX.bin flash_all" where XXX.bin is replaced
               by the name of the name of upgrade file you downloaded 
               (and maybe decompressed) from our site, it is typically named 
               2490_211.bin or axis2490.bin. 

            9. Wait for the flash load to finish, this may take 1-10 minutes.
               Always wait at least 10 minutes for the flash upgrade to complete.

            10. Your unit will automatically restart using the new firmware. 

            11. Reconfigure your settings.


          Release 2.11
          ==================

	  News in 2.11 since 2.10:

	  1. 2-wire RS 485 support. This enables connection to simple devices
	     such as card readers and power meters. 2-wire RS-485 support must
             be enabled in the web interface in the settings for the RS485 port. 


	  Corrections in 2.11 since 2.10:
	  ===============================
	
          1. Corrected sending of changed serial port status when using telnet
             options. This solves problems where an application would not detect
             that serial port options have been changed.
    
	  2. Some network packets could cause the 2490 to send lots of 
             retransmissions. This has been corrected.

	  3. Improved serial port break handling.