Finding the software can be tricky as Icom typically distributes it through authorized dealers. 1. Official Sources
Ensure you install the .exe file with administrative privileges.
Input RX/TX frequencies and Narrow/Wide band settings.
If the software can't find your radio, check the "Communications Port" setting in the software menu to match the COM port assigned in your Windows Device Manager. If you'd like, I can help you: Find the latest driver for your OPC-478UC cable Walk through step-by-step channel programming Troubleshoot "No Response from Transceiver" errors