***Note *** File Link is for 320 and 420 devices Only: http://updates.netbotz.com/patches/bw/2.6.1/tftpCobra261.zip 1.) Extract the file you have downloaded to a temp folder on your pc. 2.) Next run the tftpd32.exe. Tftpd32.exe sets up a temporary tftp server on your PC. It will also show you what your computer’s IP is. This will be necessary for steps below. Make sure there are no firewalls blocking tftp ports. 3.)You should do the upgrade via the post-mechanism using Windows Hyperterminal with these settings: Bits/Sec=38,400, 8, N, 1, Hardware. Once you get your hyperterminal connected, reboot (power-cycle) your bot and stop the boot at the point where it`s doing the autoboot countdown, 5, 4, 3, 2, 1... (it will tell you to hit enter and just do so before the countdown expires). 4.)At this point (NetBotz> prompt should appear) you will type the following in to tell the appliance where to get the code from: setenv serverip (ip_of_pc_running_tftpd32.exe) 5. *NOTE: Items with a "*" prefix mean you only need to use these commands if the network you're plugged into doesn't support DHCP or because of a firmware issue, the Bot cannot obtain a DHCP address. If you do have DHCP, the appliance should obtain an IP address. *setenv ipaddr (IP of the address you want to assign the bot) *setenv gatewayip (IP of gateway) *setenv netmask (Subnet Mask IP) saveenv (this will save the environmental variables you have just changed) printenv (this will print out your settings for verification 6.Now initiate the first part of the upgrade. postupg (wait for the NETBOTZ> prompt before continuing) 7. At this point initiate the 2nd part of the upgrade procedure: kernupg (wait for the NETBOTZ> prompt before continuing) 8. Now the last part of the upgrade procedure can be initiated. There are 2 options at the point of this final upgrade procedure: I) rootupg (this final upgrade option will wipe out all Bot configuration) II) rootupg keep (this option will upgrade but save any configuration on the Bot) After the rootupg finishes installing, your system will automatically reboot and you should be able to assign/configure an IP address to the appliance and now fully configure the device as needed.