Watch for a new item to appear (e.g., USB Serial Port (COM3) ). Note down the specific assigned to your cable. Step 3: Install the Software Extract the downloaded Puxing PX-777 software ZIP file. Run the setup.exe or installer file.
Counterfeit USB cables often fail on Windows 10/11 due to driver blocks. If you see a yellow exclamation mark in Device Manager, roll back your USB driver version to an older, compatible release (such as version 3.2.0.0). To help tailor this process for you, please let me know:
When buying a USB programming cable, look for one featuring an authentic FTDI or Silicon Labs (CP210x) chip.
Sets the CTCSS or DCS sub-audible tone required to open your radio’s squelch. Leave it off/none unless required.
Enter your frequencies, tones (CTCSS/DCS), and power levels, then click "Upload to Radio" (or "Write"). Troubleshooting Tips
The original software created specifically for this model is lightweight and direct.
This usually means the incorrect COM port is selected in the software, or the USB driver is not installed correctly.
Always pull the existing data from your radio before writing new frequencies. This creates a backup and prevents firmware mismatches. Connection Sequence Turn off your Puxing PX-777.
If using a Prolific cable on Windows 10/11, you may need to use an older version of the driver, as Windows often overwrites them with incompatible ones.
Watch for a new item to appear (e.g., USB Serial Port (COM3) ). Note down the specific assigned to your cable. Step 3: Install the Software Extract the downloaded Puxing PX-777 software ZIP file. Run the setup.exe or installer file.
Counterfeit USB cables often fail on Windows 10/11 due to driver blocks. If you see a yellow exclamation mark in Device Manager, roll back your USB driver version to an older, compatible release (such as version 3.2.0.0). To help tailor this process for you, please let me know:
When buying a USB programming cable, look for one featuring an authentic FTDI or Silicon Labs (CP210x) chip.
Sets the CTCSS or DCS sub-audible tone required to open your radio’s squelch. Leave it off/none unless required.
Enter your frequencies, tones (CTCSS/DCS), and power levels, then click "Upload to Radio" (or "Write"). Troubleshooting Tips
The original software created specifically for this model is lightweight and direct.
This usually means the incorrect COM port is selected in the software, or the USB driver is not installed correctly.
Always pull the existing data from your radio before writing new frequencies. This creates a backup and prevents firmware mismatches. Connection Sequence Turn off your Puxing PX-777.
If using a Prolific cable on Windows 10/11, you may need to use an older version of the driver, as Windows often overwrites them with incompatible ones.