Ensure you are holding both Volume Up + Volume Down (or just Volume Down, depending on the model) before plugging in the cable.
Check for the latest version of the MediaTek Bypass Tool or the specific UnlockTool update to ensure compatibility with recent security patches. Quick Summary Table Likely Culprit Recommended Action Disconnect and reconnect the physical battery. Driver Mismatch Reinstall LibUSB filters and MTK drivers. Cable/Port handshaking... error unexpected response 0x68
The device may be stuck in a pre-loader or BROM state that requires a physical reset to clear its internal buffer. Ensure you are holding both Volume Up +
The most effective fix for the 0x68 unexpected response is a hard reset of the device's battery. Driver Mismatch Reinstall LibUSB filters and MTK drivers
The "Auth Bypass" process failed to exploit the device's vulnerability correctly, often due to incorrect timing or an unsupported firmware version. Step-by-Step Troubleshooting Guide 1. Perform a Hardware Reset
Does this error occur specifically while you are trying to or while unbricking a device ? Solved: Hardware handshaking causing a serial comm issue?