: Download the Qualcomm_USB_Driver_Setup.exe from a reputable source like Driver Scape or The Custom Droid .

In the initial setup screen, select (do not select Checked Build, as it is meant for software developers) and click Next .

If the 9008 driver still refuses to install, try these:

: If the automatic setup fails, open Device Manager , right-click the "QHSUSB_BULK" or "Unknown Device," select Update Driver , and manually browse to the folder where you extracted the driver files. 2. Resolve the "Yellow Exclamation Mark" Error

Once the PC restarts, repeat the manual driver installation process in Phase 2. Summary of Fixes for Oppo/Vivo / Yellow Exclamation Mark

If the device appears as "QHSUSB_BULK" in Device Manager, the drivers are either missing or incorrectly mapped. Unspecified Device:

High-amperage charging cables often lack the data pin stability required for low-level EDL flashing. Use an original manufacturer cable or a certified high-quality data syncing cable.

Step-by-Step Guide to Install Oppo & Vivo Qualcomm 9008 Drivers

. When your device shows a black screen and is detected by your PC as "QHUSB_BULK" "Qualcomm HS-USB QDLoader 9008,"

The easiest way is to install the official Qualcomm USB drivers, which often include the 9008 driver. Download the latest Qualcomm USB Driver Setup. Run the .exe file as Administrator. Choose or "Driver only" during installation. Restart your PC. Reconnect your phone in 9008 mode.

Before beginning the installation, prepare the following to ensure a smooth process: