As Windows advances and old terminal programs such as Hyperterminal are not available anymore, I thought to provide a guide on how to update the DC2N firmware on the legacy device, where updates are done via serial port.
The download page for TeraTerm is: http://en.sourceforge.jp/projects/ttssh2/releases/
Once downloaded and started, select serial port and pick up the COM port you will connect DC2N to:
From the “Setup” menu select “General…” and configure the Language as needed. E.g.:
From the “Setup” menu select “Serial Port…” and configure as per below (it is very important that you don’t forget to set the line delay to 250 ms):
At this point you might want to choose the “Save setup…” option under the “Setup” menu and save the above configuration to file for future uses. E.g.:
You are done for what concerns the software. Now remove the bootloader jumper of your DC2N, connect it to the COM port via a straight serial cable and power DC2N up. The “>” prompt will be shown. Press “f” on your PC keyboard to start flashing:
Now from the “File” menu, select “Send file…” and open the firmware update file you were provided (it’s a txt file). During the upload you will be able to see the progress as per below:
Once finished, you will see an “OK” reply:
If anything other than the “OK” message is displayed, repeat the steps from pressing “f” onwards.
That’s done! Power DC2N off, put the jumper back and you are ready to use your updated DC2N!