a73 cph1725 unlock help

hi team please can u help me unlock this phone
try always get this error
here is log
Exe version: NCKBox AndroidMTK 1.8.9.8
Selected model: OPPO A73
Action: Unlock
Scanning for presents meta ports...
Keep VOL- button untill inserting USB cable.
[91]Detected: Preloader And Gadget Serial (COM91)
\\?\usb#vid_22d9&pid_0006#6&17aee501&0&1#{a5dcbf10-6530-11d2-901f-00c04fb951ed}
Starting META mode, wait...
Error get boot mode, aborting.
All done.

when try flash mode also get eror

Exe version: NCKBox AndroidMTK 1.8.9.8
Selected model: OPPO A73
Action: Unlock
Reinsert phone battery.
Battery must be charged.
Keep VOL- button untill inserting USB cable.
Detected : Preloader And Gadget Serial (COM91)
Phone detected...Please wait
BBCHIP: 6763 1 ca01
Using Algo 3.
Helio MT6763 phone detected, swithing to helio api
Loading Custom Preloader
Helio connect da error, aborting.
BBCHIP MT6763
[SECURE BOOT]Not supported by exe or wrongly selected, aborting
If model is listed, please select correct model
If model is not listed, use custom DA from phone firmware
Boot Fail.!!!.
All done.


if driver eror please share drivers
realy waiting for help