The "MTK Bypass Tool Handshaking Error" occurs when your computer fails to establish a secure communication link with a MediaTek (MTK) device in BootROM (BROM)
Handshaking errors are almost always issues. Start with drivers and USB 2.0, then use mtkclient if the classic bypass tool fails. For very new chips (Dimensity 9000+), only hardware testpoint + mtkclient works reliably.