The device may be stuck in a pre-loader or BROM state that requires a physical reset to clear its internal buffer.
A damaged USB cable or a port with low power delivery can cause data "jitter," leading to an unexpected response code. handshaking... error unexpected response 0x68
Use a trusted tool like the MCT MTK Auth Bypass Tool to reinstall the specific USB filters required for your device model. The device may be stuck in a pre-loader
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 The "Auth Bypass" process failed to exploit the
If the device has a removable battery, take it out for 30 seconds. If it’s internal, disconnect the battery flex cable from the motherboard.
Does this error occur specifically while you are trying to or while unbricking a device ? Solved: Hardware handshaking causing a serial comm issue?
Open your Device Manager, remove existing MTK/Preloader drivers, and uninstall LibUSB-Win32 .