To resolve the QUSB_BULK error, you need to manually replace it with the driver.
Select from the category list, then click Next .
To help clarify your specific hardware setup, please let me know:
A system update that fails halfway through, corrupting the boot image. qusb bulk cid driver
Seeing the entry in your Windows Device Manager typically indicates that your Qualcomm-based device—most often a Google Pixel, OnePlus, or other Android smartphone—is in Emergency Download Mode (EDL) .
Once completed, the device should now appear as under the Ports section. Troubleshooting: Driver Installation Issues If you continue to have trouble, try these solutions:
Once the driver is successfully installed, the QUSB_BULK_CID entry in Device Manager transforms into Qualcomm HS-USB QDLoader 9008 (COMx) under the “Ports (COM & LPT)” section. At that point, the device is ready for low‑level flashing. To resolve the QUSB_BULK error, you need to
Click and browse to the folder where you extracted your Qualcomm driver files.
The device is actually in EDL mode, but your Windows PC lacks the specific registry configuration and driver files to assign it a proper COM port. Prerequisites Before Installation
Select the driver and click "Next." The device should now be listed under "Ports (COM & LPT)" as . Seeing the entry in your Windows Device Manager
The USB cable was disconnected, or the PC lost power during a low-level firmware upgrade.
The device enumerates for 2–3 seconds and then drops offline entirely.