Install usbdk or libusb drivers (essential for Windows) to ensure proper communication between the PC and the phone.
Instead of custom vendor requests, use standard authenticated classes like or FIDO2 . These have built-in challenge-response mechanisms that raw libusb transfers cannot trivially bypass.
: The libusb-win32 tool attaches a "filter wizard" to the standard MediaTek USB port driver. It intercepts the communication channel without completely replacing the original MediaTek vendor drivers.