Despite the naming, the v1170 update often reuses the same 0076.kwi file name as v1075, causing confusion. Always check the version number displayed after installation.
| Module | Previous Issue | Improvement in da31 | |--------|----------------|----------------------| | Network Stack | IPv6 packet drop after 48 hrs | Fixed memory leak. Stable without reboot. | | Web UI | Dashboard widgets fail to load on Firefox | Full compatibility with Chromium 120+ and Firefox 115+ | | Serial Port | Baud rate 115200 causing CRC errors | Enhanced signal timing; adjusted default FIFO buffer | | Power Management | Wake-on-LAN inconsistent | Now supports Magic Packet from any subnet | | Logging System | Log rotation fails after 2MB | New compression (ZSTD); retains 30% more history | | API Gateway | Rate limiting not enforced | Added token bucket algorithm | 17tdt1eu-da31 Software Update
You can typically find these on the official Toyota Tech EU portal or through community forums like Toyota Owners Club . Despite the naming, the v1170 update often reuses
For owners of select Toyota C-HR and Corolla models, the "Model ID DCU: 17TDT1EU-DA31" is a familiar sight when exploring the multimedia system's menus. This identifier represents a specific generation of Toyota's Display Control Unit (DCU) used primarily in Europe. While reliable, many owners have found that their unit benefits significantly from software and firmware updates. This article serves as a complete guide to the 17TDT1EU-DA31 update, covering its version history, update process, known issues, and the latest community findings. Stable without reboot
: For newer models with a Data Communications Module (DCM), the system may automatically check for updates weekly. You can also manual trigger this by going to Settings > Software Update > Update Software while connected to a stable Wi-Fi network.