Before you even open the PX-777 software, install the USB driver.
: CHIRP is a popular, community-supported tool that works with a wide range of radios, including the Puxing PX-777. puxing px-777 programming software download
If you bought a USB programming cable (usually a FTDI or Prolific-based chipset), it likely came with a mini CD. That CD contains a version of the PX-777 software. While often older, it is guaranteed to work with the cable it shipped with. Before you even open the PX-777 software, install
The safest place to start is the official Puxing factory website or their authorized distributors. Unfortunately, Puxing’s corporate website has changed over the years. As of 2025, the most reliable official source is: the most reliable official source is: