Disconnect Wi-Fi/Ethernet. If the software phones home, the patch fails.
Toyota Techstream is the official diagnostic software used by Toyota, Lexus, and Scion dealerships. A is a modified executable or launcher used by DIY enthusiasts to run the software without an official paid subscription from Toyota. It works by bypassing the registration screen, allowing the software to initialize communication with a vehicle interface cable without requiring a valid license key. How the Patch Works toyota techstream patch work