Ensure the programming cable drivers are installed correctly and that you have selected the correct COM port.
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Requires a (often RJ-45 or RJ-12 connection to the radio). Ensure the programming cable drivers are installed correctly
KPG-99D was originally built for older operating systems, but it can run on modern setups with the right configuration. System Specs Windows XP, 7, 8, 10, or 11 (32-bit or 64-bit). Hardware: Standard USB port or physical RS-232 COM port. Drivers: Latest FTDI or Prolific USB-to-Serial drivers. Step-by-Step Installation System Specs Windows XP, 7, 8, 10, or 11 (32-bit or 64-bit)
Here is the recommended approach to obtaining and installing the software safely.