I leaned back, ran the Windows 10 Memory Diagnostic just for spite (everything passed), and wrote one line in the logbook:
Windows 10 requires specific setup to communicate with the device: Disable Driver Signature Enforcement: bq firmware flash tool windows 10
: A green progress bar followed by a green ring icon indicates a successful flash. You can then safely disconnect and reboot the device. Key Considerations Unbricking : For devices like the Aquaris X2 I leaned back, ran the Windows 10 Memory
: Designed specifically to flash manufacturer-supplied stock ROMs. I leaned back
: Use a USB 2.0 port if possible, as USB 3.0 ports sometimes cause connection stability issues during the flashing process. Step-by-Step: Flashing with SP Flash Tool (MTK) Android Flashing Guide - Planet Computers