Firmware updates sometimes reset the default Canbus settings. Go to Settings > Factory Settings (you may need a passcode such as 126 , 3368 , or 8888 ), look for "Canbus Type," and re-select your specific vehicle make and model from the dropdown menu to restore control functionality. Conclusion
It is difficult to provide a review of "zwnav firmware" because in the GPS/navigation market (unlike Garmin, TomTom, or Navitel). zwnav firmware
This is a small, critical piece of software separate from Android. The MCU controls the hardware integration with your car. It manages physical buttons, steering wheel controls, reverse camera triggers, climate control displays, and power management (turning the unit on and off with the ignition). Firmware updates sometimes reset the default Canbus settings
ZWNAV frequently updates its launchers to provide a cleaner, more modern look. This is a small, critical piece of software