Launch the MSM Tool and click "Start" first. Then, connect the powered-off device while holding Volume Up, Volume Down, and Power Power off, hold for 5 seconds, then connect to the PC.
This is usually a driver or cable issue. Try a different USB port (preferably USB 2.0) or an Intel-based PC rather than AMD. Device Not Found: oneplus 10 pro msm tool
MSM Download Tool is a powerful firmware flashing utility used to unbrick devices, install stock firmware, or downgrade software on Qualcomm-based phones. However, for the OnePlus 10 Pro Launch the MSM Tool and click "Start" first