Right-click the setup.exe file and select "Run as Administrator." Legacy software often needs permission to write to protected folders.

The IC-2820 utilizes a proprietary data port. To connect to a PC:

| Problem | Likely Solution | |---------|------------------| | “Port not found” | Wrong COM port; USB adapter needs driver; try COM1-4 | | “Timeout error” | Radio not in clone mode? (Some IC-2820H require you to press [M/CALL] + [VFO] while powering on – check manual) | | Software won’t install on Windows 10 | Run installer in Windows XP SP3 compatibility mode | | Garbled memory data | Bad cable or wrong driver for USB-to-serial adapter (use FTDI chipset) |

If using an OPC-478U (USB version) or a generic USB-to-serial adapter with a 3.5mm plug:

Icom Cs-2820 Software Download Guide

Right-click the setup.exe file and select "Run as Administrator." Legacy software often needs permission to write to protected folders.

The IC-2820 utilizes a proprietary data port. To connect to a PC: Icom Cs-2820 Software Download

| Problem | Likely Solution | |---------|------------------| | “Port not found” | Wrong COM port; USB adapter needs driver; try COM1-4 | | “Timeout error” | Radio not in clone mode? (Some IC-2820H require you to press [M/CALL] + [VFO] while powering on – check manual) | | Software won’t install on Windows 10 | Run installer in Windows XP SP3 compatibility mode | | Garbled memory data | Bad cable or wrong driver for USB-to-serial adapter (use FTDI chipset) | Right-click the setup

If using an OPC-478U (USB version) or a generic USB-to-serial adapter with a 3.5mm plug: USB adapter needs driver