Windows 10 blocks unsigned drivers by default. BQ drivers are often unsigned, so you need to disable driver signature enforcement before installation. To do this:

Flashing erases everything. Move your photos, contacts, and documents to a cloud service or an external drive.

Install your downloaded VCOM or Qualcomm drivers once the computer boots back up. Step 2: Preparing Your BQ Device

Keep the cable steady until a large dialog pops up to confirm a successful flash. Method B: For Qualcomm (MSM) BQ Devices Target Devices: Aquaris X5 Go to product viewer dialog for this item. Go to product viewer dialog for this item. , U Series

Power off the phone completely. Hold , then insert the USB 2.0 cable.

After completing this step, install the BQ USB driver by right-clicking the executable and selecting .

: Essential for recovery; provides deep access to system partitions; free to use.

A: BQ’s official site now redirects. Check the Internet Archive (web.archive.org) for support.bq.com or use community backups on MEGA/Google Drive (verify SHA256 checksums).

: Use a high-quality data cable, preferably the original one. Step-by-Step Flashing Guide

Windows 10 often requires specific configurations to properly recognize BQ devices. Here are the essential preparations:

How to Use the BQ Firmware Flash Tool on Windows 10: A Complete Update Guide