What (if any) your flashing tool is currently showing. Whether your PC recognizes the device under Device Manager .
Re-install your Qualcomm drivers and ensure you are using a data-sync capable USB cable. Important Security and Risks Warning Patched Firehose File For Poco X3 Pro %5BTOP%5D
is your Poco X3 Pro having (e.g., stuck on logo, won't turn on)? Do you already have the MiFlash Tool installed? instructions on how to use the file? What (if any) your flashing tool is currently showing