Go to Car Settings > System Settings and note your current "App Version" or "Build Number".
: Download the update.zip file (approx. 1.2GB) and copy it to a blank USB drive (FAT32 format). zwnav firmware top
AT+VER → returns firmware version AT+SN → returns serial number AT+MODEL → returns model Go to Car Settings > System Settings and
Factory ZWNAV skins often look dated (think Android 4.0 aesthetics). The Top version introduces a dynamic launcher with gesture navigation, dark mode scheduling, and customizable widgets for speed, altitude, and engine diagnostics. dark mode scheduling