Take Master 3X as an example ,we will teach you how to import the default PID

1.Click the following link to download the official file

Master3X Factory Firmware and Configuration Files

2.Use date line（USB-A to USB-C）to connect Master 3Xwith Betaflight configuration。

3.Click CLI

4.Click Load from file

5.Find the file we download on the first step

6.Click "Open"

7.Click Execute

8.Wait patiently for the commands to finish loading. Once completed, the interface will return to the initial Betaflight screen. At this point, the default PID settings have been successfully applied.