You’ll likely need to manually register the MVCI32.dll via the Command Prompt or use a "firmware update tool" (careful with these!) to make the cable talk to your 64-bit OS.
Instead of paying for a monthly subscription just to program a new key fob or read a transmission code on an older vehicle, many enthusiasts turn to patching the software. Here is a quick rundown of what that actually involves and how to get it working. toyota techstream patch work
Most current patches work on or 17.00.009 . Never use the auto-updater in the patched software; it will overwrite the cracked files and re-lock the system. Always disable your internet connection when running patched Techstream. You’ll likely need to manually register the MVCI32
Example hex edit (illustrative – version-specific) : Find: 74 2E 8B 45 → Replace with: EB 2E 8B 45 (inverts a conditional jump). Most current patches work on or 17
3/10 (Expect to spend 1–2 hours troubleshooting drivers).