Qfil Failed To Open Com Port Handle Jun 2026

If you have followed all nine solutions and the error persists, your phone's eMMC (internal storage) may be physically dead, or the firehose loader you are using does not match your device's CPU (a separate error often misreported as a port handle failure).

The error wasn’t just a denial. It was a judgement.

Select > Advanced options > Startup Settings > Restart . Select option 7) Disable driver signature enforcement . Summary Checklist Run QFIL as Administrator. Use USB 2.0 ports. Reinstall Qualcomm Driver from QPST folder. Keep device in 9008 mode.

“Sahara protocol handshake succeeded.” qfil failed to open com port handle

If you still face the error after following the steps above, consider these additional factors.

This error usually indicates a communication breakdown between the PC software and the phone's hardware. Common culprits include:

Open on Windows, locate any failed USB entries, and uninstall them. If you have followed all nine solutions and

Even with the right drivers, QFIL might not be able to open the COM port without sufficient privileges.

Open on your PC (Press Win + X and select Device Manager). Expand the Ports (COM & LPT) section. Look for Qualcomm HS-USB QDLoader 9008 (COMx) .

: If the port is detected but the handle won't open, manually reboot the device back into EDL mode (9008) while it is connected to the PC. QFIL Settings Check Select > Advanced options > Startup Settings > Restart

“Failed to connect to phone. Check port settings and drivers.”

: Try a different USB port—preferably a USB 2.0 port on the back of the motherboard if using a PC—and use the original or a high-quality data cable.

Open Device Manager and expand the Ports (COM & LPT) section.

Try a different USB port (preferably a USB 2.0 port on the back of the motherboard) and a different high-quality USB cable. 4. Address "Sahara" or Timeout Failures