If you attempt to download these files from third-party sites (often found on forums or obscure tech blogs), here is the typical user experience:
: For specific head units like Teyes, ensure the CAN box is compatible with the latest TEYES (FYT) updates Connectivity
Do not turn off the engine or disconnect power during this time!
: If negative temperature readings or climate pop-ups disappear, try rolling back the head unit firmware or re-selecting the vehicle model in the Hiworld settings Compatibility
: Official updates are often found on the Hiworld Website or provided via Dropbox links by sellers.