[extra Quality] - Handshaking... Error Unexpected Response 0x68

If the phone is stuck in a boot loop or sending corrupted responses, disconnect the battery connector inside the phone (if possible) or let the battery drain completely. Re-attempt the connection with a fully charged battery.

Resolving the "handshaking... error unexpected response 0x68" requires a systematic approach:

Flash an official, complete factory stock ROM instead of custom partitions.

Locate your device in the listed menu—it usually displays as MediaTek USB Port or USB Serial Device . Click and reboot your PC to apply the changes. 2. Execute a Total USB Interface Reset handshaking... error unexpected response 0x68

: Returning 0x68 typically implies that the device controller processed the pulse but returned a "busy," "unsupported command," or "hardware timeout" error. This means the computer can see the physical COM port connection, but the software cannot establish the logical data pipeline required to inject a download agent or bypass security. Primary Root Causes

High-speed data transitions over a faulty USB cable or a loose motherboard port can drop crucial bits during the initial handshake sequence.

Unplug the phone and completely close your flashing software. If the phone is stuck in a boot

This error occurs during the "handshake" phase—the initial "hello" between a client and a server. The client sends a specific packet expecting a certain protocol response, but instead, the server sends back something else.

0x68 has common meanings:

import serial, time

If the slave is too slow to respond, the master might read part of a previous transmission or noise, resulting in the 0x68 error. Increase the communication timeout setting in the master device. 3. Slave Device Firmware Issues

In many ASCII or binary-based protocols, 0x68 is not a standard ACK or NAK byte. It may indicate: