OTA (Over The Air) is a technology that can complete the entire system software update, parameter configuration, and firmware upgrade through wireless network without manual assistance. In the system without OTA capability, these operations need to be involved by the original factory professionals and take a long time to complete. OTA realizes all the upgrading, configuration, firmware upgrade and other work of the system without human or low participation, which helps users reduce maintenance costs under controlled conditions. A high degree of automation not only improves efficiency, but also avoids mistakes that may be caused by human participation, so that ECF is no longer limited by the limitation of software version, and realizes the sustainable life cycle of cloud platform in a sense.