The official update package is (or was) typically available via a file labeled . Based on user reports from early 2024, the original direct download links from Toyota's servers have been deactivated. The latest community-documented version for the 17TDT1EU-DA31 unit is v1170 , which is a .kwi (firmware) file dated April 2021. For owners unable to find the file independently, a visit to a dealership for the update is the safest route.
| Feature | Pre-Update (Legacy) | Post-Update (vDA31) | | :--- | :--- | :--- | | | 85ms latency | 32ms latency | | Bluetooth Pairing | Manual confirmation each time | Automatic seamless reconnection | | Voice Command | Basic (Climate + Radio) | Advanced (Navigation + Third-party apps) | | Over-the-Air Updates | Not supported | Delta OTA enabled (saves data) | | Dashboard Customization | 3 preset themes | 8 configurable themes with telemetry | 17tdt1eu-da31 Software Update
Users often search for this update to move from older versions (like CA31) to DA31, which typically brings improved stability, better smartphone integration, and fixes for common glitches. Why You Should Update to 17TDT1EU-DA31 The official update package is (or was) typically
Use a drive smaller than 32GB formatted to FAT32 . For owners unable to find the file independently,
: Resolves common glitches where these interfaces fail to launch or freeze during use.
: This is often required for older versions or if the OTA fails.
🟢 Rolling Out Category: System Stability & Security Patch Release Date: [Current Date]