Always navigate from yamahaproaudio.com → your product → Downloads. Create a free account. Download YDT V2.1.0 or newer. Verify the checksum. Only then should you attempt to update your console.
| Feature | YDT (New) | YDIS (Legacy) | | :--- | :--- | :--- | | | v3.5+ | Discontinued (v1.33) | | Supported Models | 2000–2025 | 1998–2015 | | Operating System | Windows 10/11 | Windows XP/7 | | Data Logging | Yes (CSV export) | No | | Active Tests | Injector, Coil, IAC valve | Limited | | Twin-Engine Sync | Full support | Basic only |