FAQ on QFlash

Why is there only one serial port after downloading firmware via QFlash?

Close QFlash, reboot the module and try again.

Why is it a failure to download the firmware suffixed with .bin using QFlash?

The QFlash cannot directly download the firmware with the .bin and needs to be modified to .zip.

Is there any limitation when detecting the download port via QFlash?

It is indeed. As a result, please power on device before downloading.