*4.4.1 PX4 firmware implementation*

We launch the program Q Ground Control after downloading and installing it on computer by selecting "Firmware" on the sidebar, and then we connect the flight controller to the computer via a USB cable.

After downloading and installing the QGroundControl program on computer. Firstly, we select "Firmware" from the sidebar. Then, we connect the flight controller to the computer using a USB cable and start the QGroundControl program.
