If the driver does not work after installation, you must manually assign it: Connect your Oppo/Vivo phone in EDL mode (9008) to the PC. Right-click the Start menu and select .
Fixing Oppo/Vivo 9008 USB driver issues requires manually installing Qualcomm HS-USB QDLoader 9008 drivers via Device Manager after disabling Windows Driver Signature Enforcement. Common fixes involve resolving "QHSUSB_BULK" errors by updating drivers in EDL mode (Volume +/- while connecting) to ensure correct port detection. For more details, watch the guide on YouTube .
For Windows 11 24H2 and later, the best solution is to use an officially signed driver.
Unlike Samsung or Xiaomi, Oppo and Vivo devices are very picky about driver signatures. Windows 10 and 11 actively block the old, unsigned drivers that these phones need to communicate in 9008 mode. oppo vivo usb driver fix 9008
Release the buttons the moment your PC plays the hardware connection sound. Method 2: EDL Cable or Test Points (Hard Bricked Devices)
Your device should now be showing a stable in Device Manager. You can now proceed to flash the stock firmware using QFIL or MSM Download Tool.
Your computer will boot normally, ready to accept the 9008 drivers. If the driver does not work after installation,
“Now download the official OPPO USB Driver from the OPPO support site, but here’s the secret—also download the Qualcomm HS-USB QDLoader 9008 driver (signed version) from a trusted source like ‘qcser.inf’ or the ‘Qualcomm USB Driver v1.0’ package.”
: Run the .exe as an administrator. Choose "Free Build" if prompted during the setup.
Fixing the is one of the most frustrating technical challenges in mobile repair. The combination of Windows driver signing, low battery voltage, and proprietary USB VID/PID codes creates a perfect storm. Unlike Samsung or Xiaomi, Oppo and Vivo devices
Windows often fails to assign the correct driver automatically, labeling the device as "Unknown Device," "QUSB_BULK," or displaying a driver signature error.
Arjun then had her open the MSM Download Tool (specific to her OPPO model). “Now,” he said, “press Volume Up + Volume Down and plug in the USB. The tool should see ‘COM10’ in green.”