Download the verified Mini VCI J2534 64-bit driver package from a reputable automotive forum or hardware vendor. Create a temporary folder on your desktop named MiniVCI .
Copy any associated FTDI driver files found in your extraction (usually a subfolder containing files like ftdibus.inf , ftdiport.inf , ftd2xx.dll ). Paste those FTDI files into the same directory. Step 4: Update the Windows Registry for J2534 PassThru
: Open Windows Search, type Core Isolation , and open the system setting. Toggle Memory Integrity to OFF . Restart your computer and reinstall the FTDI drivers. Constant Disconnections or Dropped Packets Mini Vci J2534 Driver Windows 11 64 Bit
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\PassThruSupport.04.04] [HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\PassThruSupport.04.04\XHorse - MVCI] "Name"="XHorse - MVCI" "Vendor"="XHorse Electronics" "ConfigURL"="" "FunctionLibrary"="C:\\Program Files (x86)\\XHorse Electronics\\MVCI Driver for TOYOTA TIS\\MVCI32.dll" "APIVersion"="04.04" "ProductVersion"="1.1.0" "ProtocolsSupported"="J1850VPW:1, J1850PWM:1, ISO9001:1, ISO14230:1, CAN:1, ISO15765:1, SCI_A_ENGINE:1, SCI_A_TRANS:1, SCI_B_ENGINE:1, SCI_B_TRANS:1" "J1850VPW"=dword:00000001 "J1850PWM"=dword:00000001 "ISO9001"=dword:00000001 "ISO14230"=dword:00000001 "CAN"=dword:00000001 "ISO15765"=dword:00000001 "SCI_A_ENGINE"=dword:00000001 "SCI_A_TRANS"=dword:00000001 "SCI_B_ENGINE"=dword:00000001 "SCI_B_TRANS"=dword:00000001 Use code with caution.
Open your Toyota Techstream software interface. Download the verified Mini VCI J2534 64-bit driver
If your driver pack includes a .reg file, double-click it and confirm the prompt to merge it into your registry.
Double-click mvci-64bit.reg on your desktop. Click Yes when the Windows User Account Control panel asks for permission, and click OK to confirm the registry keys were added. Step 4: Configure Toyota Techstream Setup Paste those FTDI files into the same directory
uses an FTDI serial-to-USB chip, the basic driver must be installed first: Connect the cable to your computer.
Windows 11 requires all kernel-level drivers to be digitally signed by Microsoft. Some older cloned FTDI drivers lack modern signatures.