Qfil switch to edl error

Please all experts need solutions for qfil always error when try to flash asus firmware27open zc550kl qfil file when i watch in youtube tutor and do as they've done it still it says because of driver but it detect as Qualcomm 9008 port please my phone is needed flash by qfil dont have umtscreenshot-1.pngscreenshot-1.pngscreenshot-1.png

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