The window to "handshake" with an MTK device is often less than 2–4 seconds before it proceeds to regular charging or booting.
He disconnected the battery, held the power button for thirty seconds to drain the capacitors, and reconnected it. He tried again. Handshaking Error. The Driver Labyrinth mtk bypass tool handshaking error fix
This means the communication channel opened, but the keys didn't match, the timing was off, or the device entered a different mode than expected. The window to "handshake" with an MTK device
: Ensure the tool is in a folder path without spaces or special characters (e.g., use C:\mtk_tool\ rather than C:\Users\My Name\Desktop\Tool\ ). but the keys didn't match
Example with mtkclient (recommended replacement):