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Will These Proven Steps Fix Qualcomm HS USB Diagnostic 900E Detection Issues Instantly? Is Your Device Stuck on Qualcomm 900E? Here’s How to Restore QDLoader 9008 for Unbricking
When attempting to unbrick or flash Qualcomm-based devices like the OnePlus 9 series using the MSM Download Tool, you may encounter your device showing up as "Qualcomm HS-USB Diagnostic 900E" instead of the expected "Qualcomm HS-USB QDLoader 9008" in Device Manager. This prevents the MSM Tool from recognizing your device in EDL (Emergency Download) mode.
Step-by-Step Solutions
- Download and install the official Qualcomm USB drivers on your PC. This ensures your computer can properly communicate with the device in EDL mode.
- Temporarily disable Windows Driver Signature Enforcement to allow unsigned Qualcomm drivers to install and function correctly. On Windows, access Advanced Startup > Troubleshoot > Startup Settings > Restart > select "Disable driver signature enforcement."
- Power off your device completely.
- Press and hold both Volume Up and Volume Down buttons.
- While holding these buttons, connect your device to the PC using a USB cable.
- Open Device Manager and check for "Qualcomm HS-USB QDLoader 9008" under Ports or Other Devices.
- If your device is soft-bricked and boots to Fastboot Mode, use the Power and Volume Down buttons to enter Fastboot.
- From Fastboot, select "Power Off" using the volume and power buttons.
- As soon as the device vibrates or powers off, immediately press and hold both Volume Up and Volume Down, then connect to the PC to trigger EDL mode.
- After following the above steps, your device should now appear as "Qualcomm HS-USB QDLoader 9008."
- Proceed with the MSM Download Tool or other EDL utilities as needed.
Key Considerations
- Using the MSM Tool will erase all data and relock the bootloader.
- Always back up important data before starting the process.
- Ensure you are using high-quality USB cables and ports for reliable detection.