This is the most critical step for Windows 11 users.
Your computer will now boot into Windows 11 normally, but it will allow us to install the unsigned driver. Mini Vci J2534 Driver Windows 11 64 Bit
Use J2534 Toolbox (free from DrewTech) or J2534 Diagnostic.exe. Query PassThruReadVersion: This is the most critical step for Windows 11 users
If ReadVersion returns 0x00 or timeout, your kernel driver is loaded but the DLL cannot communicate. Reinstall the 64-bit PassThru.dll to C:\Windows\SysWOW64 for 32-bit apps or System32 for native 64-bit apps. Your computer will now boot into Windows 11
Assume you have a genuine STM32F105-based Mini VCI (red PCB, no FTDI).