How to us TFTP to perform firmware upgrade using Windows 2000 / XP:
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1) goto the Windows DOS Box or DOS prompt
2) make sure you can ping the Socket Ethernet module
3) type in command "tftp -i xxx put yyy AMD-tftp.bin"
xxx is the ip address of the socket ethernet module
yyy is the firmware file name

Firmware VERSION 2.03, DATED 20-Oct-2003:
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- When the Telnet Client session is terminated either by the Telnet Server/Telnet Client itself, the control is transferred to the "Login prompt" thereby unlocking the serial port for future use.
- Internal GPIO18 pin set to INPUT in the boot-loader. 

Firmware VERSION 2.02, DATED 29-SEP-2003:
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Fixes:
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1. TCP_NODELAY Fix.  This will send out serial data to ethernet immediately.  Ethernet Data packet size will be smaller so application server does not timeout

Changes:
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1. TCP Keepalive set to 3 minutes.

2. The LOGIN-STRING match on the serial side. Only on this string match, the login prompt or the command shell is displayed on the serial side. Can be set to "" which is the default.  This command must use with "set serial s0 auto-dialin trig-mode char"

3. CRON job which checks every 3 minutes whether the Telnet Autodialout application is running. If NOT the serial port is released. This ensures the serial port is available, if the Telnet Autodialout is killed by the kernel.

New commands added:
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1. To set the TCP Keepalive.  TCP session will terminate if connection does not response within the keep alive period.

   #set ip tcp-keepalive <t min>
      Default is set to 3 mins

2. To set the Login string on the serial side.  This is for auto-dialin 

   #set serial s0 login-string <string>
      <string of 8 characters>
   Applicable only if the "set auto-dialin trig-mode = char"




Firmware VERSION 2.01, DATED 21-AUG-2003:
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Fixes:
1. The Telnet Auto-dialout and Serial Auto-dialin port-number range is increased from (1-16000) to (1-65535).