Date Code 20020129
SEL-300 Series Relays Firmware Upgrade Instructions
B-9
SEL-387E Instruction Manual
Figure B.9: Matching Computer to Relay Parameters
E. Download Existing Firmware
Copy the firmware presently in the relay, in case the new firmware upload is unsuccessful. To
make a backup of the firmware, you will need as much as 3 MB of free disk space. This backup
procedure takes between 5 and 10 minutes at 38400 bps.
6WHS
From the Transfer menu in HyperTerminal, select Receive File.
You should see a dialog box similar to Figure B.10.
Figure B.10: Example Receive File Dialog box
6WHS
Choose a filename that clearly identifies your existing firmware version.
SEL generally lists the firmware revision number first, then the product number. All
such files have an .s19 extension (r100387.s19, for example).
Note:
After beginning the following procedure, you will need to enter this
information quickly before the relay times out.
6WHS
Enter the pathname of a folder on your computer hard drive in which you want to
record the existing relay firmware, and select “1K Xmodem” if you have this protocol
available on your PC. Otherwise, choose “Xmodem.”