Open the Command Prompt in Administrator Mode, and run the following command line:
The workaround is to install it manually, as follows: This is the step most people stumble on as “MVCI Driver for TOYOTA.msi” installer indeed does not work on Windows 圆4. Extract the IT3System.ini file to desktop for now.
Once executed, it simply unpacks and copies the IT3System.ini file to the Techstream folder. The TISKey.exe is actually a self-extracting (SFX) RAR archive file. Using the program, navigate to the temp folder with unpacked files and double click the TISKey.exe in WinRAR.
The Techstream, MVCI drivers and TIS Key all can be found on the mini disk, but I will leave a. Mine is actually Windows 7 圆4, but for Windows 8 the configuration procedure should be identical.
The “newest” refers to the version of bundled Techstream, rather than the cable firmware, as cable shows serial number “MVCI006000001” and firmware version 1.4.1, which is widely known as “cheap clone of the original XHorse MVCI cable”. Mine was advertised as “Newest V8.00.034 MINI VCI for TOYOTA TIS Techstream Diagnostic Cable & Software”. The cable comes with a mini CD with drivers and Toyota Techstream software. The cable is about 4’ long, with translucent casing and “MINI-VCI J2534 Standard OBDII Communication Interface” sticker:
I know there are a few threads out there already on the subject, but they don't contain any useful guides on how to actually succeed in activating and using this software, it's mostly just download links. This is for anyone that is currently trying to use Techstream software to access dealer abilities on their BRZ/FRS with a MINI-VCI cable and software.