Some chipsets, particularly newer ones like the MT6877 (Dimensity 900/1300), may not be supported by the generic payload included with the tool.
The (e.g., MT6765, Helio G90, Dimensity 700) if you know it. mtk bypass tool handshaking error fix
Switch to the python-based mtkclient command-line tool. It is often more stable at handling handshakes than GUI tools. Some chipsets, particularly newer ones like the MT6877
The most common cause is missing or faulty drivers. The MTK Bypass Tool requires specific drivers to communicate with the device in its lowest state. Download the latest . It is often more stable at handling handshakes
Download and install the latest MediaTek All-in-One USB Driver package. Disable Driver Signature Enforcement: Hold the Shift key while clicking Restart in Windows.
Once you fix the error, follow these rules to avoid it recurring:
Insert the cable first, then hold all three buttons (Power + Vol Up + Vol Down) until the tool detects the connection. 5. Clear Device Manager Hidden COM Ports