If the software-based exploit fails at Step 3, the device's security may be preventing the "handshake."

The mtksu exploit relies on specific vulnerabilities in the MediaTek kernel.

Most "Init Step 3" failures are caused by improper communication between the PC and the phone's VCOM port.

Ensure your device shows up as "MediaTek USB Port" (MTK Port) and not "Preloader VCOM Port" when the error occurs.

For many modern MTK devices, you must short a specific "Test Point" on the motherboard to ground while plugging in the USB.

Ensure you haven't selected "Auto." Manually select your specific SoC (e.g., MT6765, MT6762).