If you are using a USB Hub or a USB
If you are using a desktop PC, plug the cable directly into the rear USB ports on the motherboard rather than the front chassis ports. qfil failed to open com port handle
Qualcomm devices often exit EDL mode (9008) after a few seconds if no data is sent, causing the "handle" to become invalid. If you are using a USB Hub or
If it shows "Qualcomm HS-USB Diagnostics," the device is not in EDL mode. Sometimes the default configuration in QFIL is too
Sometimes the default configuration in QFIL is too aggressive for the connection. Open QFIL. Go to > Firehose Configuration . Ensure Device Type is set correctly (e.g., UFS or eMMC). Try changing the Reset After Download option. 4. Fix "Sahara" or "Download Fail" Connections
If you have exhausted all steps, a few remaining options exist:
: A simple system refresh often fixes port issues. Restart both your PC and the device, then manually re-enter EDL mode (usually by holding Volume Up + Volume Down while connecting the USB cable). Run as Administrator : Right-click the QFIL executable and select Run as Administrator