OTA firmware updates are revolutionizing smart city applications by ensuring that systems like smart lighting, environmental monitoring, smart parking, and smart traffic management remain up-to-date and efficient. These updates enable cities to manage infrastructure seamlessly, reduce operational downtime, and enhance performance. With OTA firmware updates, devices can be remotely maintained and upgraded, eliminating the need for manual interventions. This allows smart city solutions to stay secure, adaptive, and functional, improving resource management, reducing energy consumption, and optimizing traffic flow while providing better services to urban residents.