Use the command line to run msiexec /a "C:\temp\MVCI Driver for TOYOTA.msi" /qb TARGETDIR=c:\temp\mvci to force the extraction and installation on x64 systems.

Do not actually attempt to "update" the firmware, as this can brick (destroy) clone cables. : Ensure the USB Serial Port is set to in Device Manager for best compatibility. or specific help with a connection error How to set up Techstream in 2026 for your Toyota or Lexus

: It enables the cable to work in J2534 pass-thru mode, which is essential for communication between the car's ECU and your laptop. Installation Tips for Success

Autokent MVCI Multi Driver x64 is a collection of 64-bit Windows drivers and supporting files intended to enable communication between Autokent/ MVCI-compatible vehicle diagnostic interfaces (USB-to-CAN/ K-line adapters) and diagnostic software on modern Windows systems. The “Multi” package typically bundles drivers for several device chipsets (e.g., FTDI, CP210x, CH340, STMicro/STM32 DFU, WinUSB) plus installation utilities to improve plug-and-play compatibility across a wide range of clone and original MVCI interfaces.

The represents a critical bridge between modern 64-bit computing environments and specialized automotive diagnostic hardware. In the niche world of vehicle maintenance, particularly for technicians working with Toyota, Lexus, and Scion vehicles, this driver package has become an essential "workaround" for hardware that was originally designed for older, 32-bit architecture. The Problem: Legacy Hardware vs. Modern OS