DS Resources

Failed to open serial port

This is perhaps the most common issue when connecting to or flashing a flight controller in Betaflight Configurator.

Failed to open serial port

First thing to try would be a different USB cable, make sure it’s a data cable, not a charging-only cable.

If that didn’t work, try running the ImpulseRC Driver Fixer.

1. Connect your FC to the computer via USB Cable

2. Download and run ImpulseRC Driver Fixer Tool here (Warning: it’s a 3rd party software, please scan it with AV software before running it)

3. This tool will automatically search for your FC, and install whatever driver you need on your computer.