This is usually due to improper drivers. Re-install the VCOM drivers and ensure driver signature enforcement is disabled.
Because BQ devices are built on various hardware architectures—primarily Qualcomm Snapdragon and MediaTek (MTK) chipsets—the exact utility and procedure you need will depend on your specific model. This comprehensive guide covers how to set up, configure, and use the necessary flashing utilities safely on Windows 10. Prerequisites: Preparing Your Windows 10 Environment
You must find the exact firmware for your BQ model (e.g., Aquaris E5s, M5, X5, U Plus). Download the firmware from the official BQ website .
