This driver treats the device as a standard USB-to-Serial modem. It works well for serial logging and low-level NVRAM access but often fails with newer flash tools (SP Flash Tool v6+). Use only as a fallback.
[Manufacturer] %Mfg% = MTKDevices, NTamd64 mtk usb serial port driver x64 top
Download the driver package (often labeled as MTK_USB_All_v1.0.8 or similar). Open on your PC. This driver treats the device as a standard