: Using a low-quality USB cable or a faulty USB port on the PC can lead to intermittent connection failures.

: Verify that the "Programmer Path" in QFIL points to the correct file for your specific device model.

If you have tried everything and still see the error, your device is not truly in 9008 mode—it is in a partial boot state. Short the test points to force true emergency download mode. Everything else is just Windows theater.