Windows 10 and 11 are notorious for automatically installing the wrong USB drivers for MediaTek devices. If the device shows up as "MTK USB Port" or "Android ADB Interface" instead of "MediaTek PreLoader USB VCOM Port," the handshake will fail.
Always use device-specific guides and correct scatter/DA files. Back up any accessible data beforehand; some bypasses or flashes can wipe the device. If you want, tell me the exact phone model and the error text and I’ll give model-specific steps. mtk bypass tool handshaking error
: Power off the phone completely. Hold both Volume Up + Volume Down simultaneously, then connect the USB cable while the script is already "Waiting for device". Windows 10 and 11 are notorious for automatically
If the user fails to hold the keys correctly, the device may boot into the standard PreLoader mode or attempt to boot the operating system rather than entering the necessary BROM state. Additionally, if other software that interfaces with the phone—such as ADB (Android Debug Bridge) or a proprietary flashing suite—is running in the background, these programs may "hog" the COM port, preventing the bypass tool from accessing the device to perform the handshake. Back up any accessible data beforehand; some bypasses