As the expectation from consumers for more infotainment system capabilities and services is rising, the automotive software is becoming more complex. This trend leads to significant and continuous cost increases to develop the ever more complex system and maintain software more difficultly. Thanks to the latest HTML5 technology and the OMA(Open Mobile Alliance) download protocol, the software of ECU(Electronic Control Unit) and infotainment system can be updated through mobile networks and Wi-Fi connectivity. The back-end server generates differential SW data and deliver them to clients. All transactions are strictly secured and stable by use of HTTPS
and an authentication mechanism. The car consumers will be able to download updated software with or without their awareness. Additionally, automakers will be able to provide the up-to-dated services with consumers at considerably lower costs.