Handshaking... Error Unexpected Response 0x68 Extra Quality May 2026

A damaged USB cable or a port with low power delivery can cause data "jitter," leading to an unexpected response code.

The device may be stuck in a pre-loader or BROM state that requires a physical reset to clear its internal buffer.

Use a trusted tool like the MCT MTK Auth Bypass Tool to reinstall the specific USB filters required for your device model. handshaking... error unexpected response 0x68

Multiple versions of LibUSB or MTK USB drivers can confuse the communication port.

Open your Device Manager, remove existing MTK/Preloader drivers, and uninstall LibUSB-Win32 . A damaged USB cable or a port with

Use a high-quality USB 2.0 cable and a rear motherboard port. Update to the latest version of the bypass tool.

Your PC should briefly show "MTK USB Port" or "Preloader USB VCOM Port." If it disappears too quickly or shows an error, the bypass tool cannot catch the handshake window. 4. Update the Servicing Tool Multiple versions of LibUSB or MTK USB 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

If you are using an older version of a bypass or unlock tool, it may not recognize the 0x68 response from newer firmware versions.