Guide to the BQ Firmware Flash Tool for Windows 10 The BQ Firmware Flash Tool is a specialized Windows utility developed by Mundo Reader S.L. to help users install official stock ROMs on BQ smartphones and tablets. Whether you need to recover a device from a boot loop, fix software errors, or perform a clean update, this tool is the standard solution for BQ hardware. Key Features and Compatibility

Prerequisites

1. Windows 10 PC (Administrator access required).
2. Bq Device with at least 50% battery.
3. USB Data Cable (Original cable recommended).
4. Bq Drivers (Hard to find officially; often standard ADB drivers work, but specific Bq drivers help).
5. Platform Tools (ADB and Fastboot).
6. Firmware File (Must be specific to your exact model number, e.g., Aquaris X Pro vs. Aquaris X).

A. Disable Driver Signature Enforcement

Typical Flashing Workflow (safe default)

Use this sequence unless vendor docs specify otherwise.

Driver Signature Enforcement: For MediaTek (MTK) based devices, you must disable driver signature enforcement in Windows 10 to properly install the necessary VCOM drivers.

Load Scatter File: In the "Download" tab, click Scatter-loading and select the text file (e.g., MTxxxx_Android_scatter.txt) from your extracted firmware folder.

• Driver signature enforcement is a major hurdle. On Windows 10, you must disable driver signature verification (by restarting with advanced startup options) before installing the USB drivers. Without this, the tool won’t detect your device in fastboot or EDL mode.
• No automatic driver update feature – you may need to manually point Windows to the driver folder.
• The installer sometimes fails silently on Windows 10 Pro N editions (missing Media Feature Pack).
• No official support for Windows 10 22H2 or later – the tool was last updated in 2017.

Launch the Tool: Open the SP Flash Tool folder and run flash_tool.exe as an administrator. Load the Scatter File: In the tool, go to the Download tab. Click the choose button next to "Scatter-loading File".