The COM port number is too high (above COM9) or the cable is in "sleep mode". Solution:
The version number typically refers to the driver software version, but it is critically important to note that its compatibility depends on the hardware (firmware) version of your cable. The cable itself is often sold with a mini CD containing this MSI file alongside the Techstream software.
: Move the extracted files to C:\Program Files (x86)\XHorse Electronics\MVCI Driver for TOYOTA TIS .
: Inside Techstream, go to Setup > VIM Select and choose "XHorse - MVCI" to activate the link. mvci driver for toyota-cable 2.0.1.msi
Right-click on mvci driver for toyota-cable 2.0.1.msi and select Run as Administrator .
Windows 10 and 11 enforce strict driver signature verifications, rejecting older or unofficial clone drivers.
Open the (Type regedit in the Windows start menu). The COM port number is too high (above
What the installer likely contains
: Use a command like msiexec /a "MVCI Driver for TOYOTA-CABLE 2.0.1.msi" /qb TARGETDIR=C:\temp\mvci to unpack the driver files.
Without the correct driver, your Windows PC will detect the cable as an "Unknown Device" or a generic "USB-to-Serial" adapter. The installs the necessary .INF files , .SYS files (kernel drivers), and the MVCI USB Driver Manager . It tells Windows that this specific USB device is a Toyota MVCI, assigning it a unique COM port or direct USB channel. : Move the extracted files to C:\Program Files
After completing the steps above, confirm that your system is ready for Techstream:
In the world of automotive diagnostics, few names carry as much weight for Toyota, Lexus, and Scion vehicles as (Multiple Vehicle Communication Interface). Whether you are a professional mechanic in a busy garage or a dedicated DIY tuner working on a JDM engine swap, the bridge between your laptop and your car’s ECU is a driver file.