Right-click on "Unknown Device," select "Update driver," then choose "Browse my computer for drivers". Navigate to the folder where you extracted the FTDI driver files, or simply let Windows search. If that fails, repeat the uninstall and reinstall process, making sure you are using the correct FTDI VCP driver for your operating system.
Improved stability for a wide range of transceivers, including the IC-7300, IC-7610, and newer models like the IC-9700.
Visit the FTDI website or a trusted vendor for the latest Virtual COM Port (VCP) drivers.
If your radio control software (e.g., WSJT-X, FLDIGI, Ham Radio Deluxe) fails to communicate properly, verify that the correct COM port is selected in the software’s settings. Also, ensure that no other application is using the same COM port.
Give Windows a few seconds to finish its work, and then open Device Manager again. Expand the "Ports (COM & LPT)" section. You should now see your LDC101 cable listed as a COM port, for example, "USB Serial Port (COM4)." This confirms that the driver update was successful. If you see a yellow exclamation mark next to the device, it indicates a driver problem, and you may need to repeat the process. ldc101 usb to civ driver updated
If the driver is installed but the software cannot communicate, ensure the 3.5mm plug is securely in the "REMOTE" jack and not the "KEY" jack.
Newer OS versions often deprecate older, unsigned drivers, resulting in a Code 10 or Code 52 error in Device Manager.
Recent Windows updates can sometimes break communication with older USB-to-serial chips (like those used in the LDC101).
Follow these steps to obtain and install the latest CP210x driver for your LDC101 USB to CIV cable. Improved stability for a wide range of transceivers,
Run the downloaded .exe as Administrator.
Buffer overrun. Solution: In your logging software, enable RTS/DTR low or high (toggle either). Also reduce polling interval to 500ms.
So, the next time you see that update notification or a message on a forum about a new driver, take a few minutes to follow the steps in this guide. Your radio (and your logbook) will thank you. Go ahead, download the latest FTDI driver, give your LDC101 cable a fresh start, and rediscover the joy of a perfectly connected shack.
He leaned back. The LDC101’s little red LED blinked steady and true—a heartbeat across the USB bridge. Also, ensure that no other application is using
Updated drivers often better handle high-speed CI-V communication. How to Find and Install the Updated LDC101 Driver
Right-click on the driver installer executable and select "Run as administrator." This gives the installer the elevated privileges it needs to write files to protected system directories. If you are still having issues, temporarily disable your antivirus software, as it may be interfering with the installation.
Before diving into the update, let’s clarify what this driver actually does.