As detailed in this video, be sure to:
1. Use the correct cable (Sabrent or Saelig USB to RS232 serial converter cable);
2. Verify the correct port number is set in your modem settings;
3. Ensure the control panel PC board CONFIG jumper is set to correctly--when downloading to the panel, set the jumper to NORMAL ("up position").
View this detailed video for more information.
----------------------------------------------------------------------------------
Stock Music provided by ikoliks, from Pond5
(Stock Music: https://www.pond5.com/royalty-free-mu...)
(Pond5: https://www.pond5.com/)