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If you have ever attempted to flash custom firmware, unbrick a Qualcomm-based Android device, or perform low-level system recovery on a smartphone or embedded board from brands like Xiaomi, OnePlus, LG, or Motorola, you have likely encountered a cryptic device name in your Windows Device Manager: .
Qualcomm HS-USB QDLoader 9008 (COMx)
bcdedit /set testsigning on
Download the latest "Qualcomm USB Driver" package. These are widely available from reputable Android development communities (like XDA Developers) or official flash tool repositories (like Miracle Box or QPST tools). qusb-bulk driver windows 11