Incorrect, missing, or corrupt MediaTek USB VCOM or LibUSB drivers.
Using USB 3.0 or 3.1 ports (often blue or red) can cause timing issues with older MTK chipsets; USB 2.0 ports are generally more stable for this task. 3. Device State and Timing mtk bypass tool handshaking error
Modern devices (like certain Lenovo or Xiaomi models) may have BootROM access hardware-disabled, leading to a permanent "Echo mismatch" or failed handshake. Incorrect, missing, or corrupt MediaTek USB VCOM or
→ Use mtkclient (free, Python-based) instead of the old MTK Bypass Tool. It handles handshake more reliably. mtk bypass tool handshaking error
Follow these troubleshooting steps in order, as they move from the most common software fixes to physical hardware adjustments. 1. Fix Driver Conflicts with LibUsb (Most Common Fix)