Always scan .bin files for malware and verify SHA256 against known good dumps.
The firmware acts as the operating system for your car's multimedia head unit. ZWNAV units typically run on modern Android versions (Android 10 through Android 14) and support features like: zwnav firmware
If the unit won't boot, you may need to enter Recovery Mode (usually by holding the Reset button and Power button simultaneously) to install from the SD/USB. Always scan