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This document explains "OTA (Over The Air)," a system that utilizes wireless communication technology to remotely update the software/firmware of devices. It includes the overall structure of firmware updates via OTA, the procedures for OTA updates, typical security risks, and examples of effective technical measures against those risks. This is a handy reference, so please feel free to download it and read it. [Contents (partial)] ■ What is OTA ■ Demand for OTA ■ Mechanism of OTA updates ■ Differences in memory configuration and methods ■ Development procedures and points to note *For more details, please download the PDF or feel free to contact us.