Fecha de publicación: 12/03/2021 Fuente: Wipo "IOT" The invention discloses a remote upgrading method and system for NBIoT equipment, and the method comprises the steps: receiving a version detection request transmitted by target NB-IoT equipment in atiming period, determining whether the target NB-IoT equipment has a firmware updating version or not according to the version detection request, and if the target NB-IoT equipment is determined to have the firmware updating version, obtaining a target cell ID corresponding to the target NB-IoT equipment, determining whether the target NB-IoT equipment is allowed to download the firmware update version according to the device connection number of the target cell ID, and generating a target update report of the target NB-IoT equipment for storage after the target NB-IoT equipment finishes downloading the firmware update version. Therefore, the workload of the OTA server is reduced, the firmware updating efficiency of other connecting devices of the OTA server is improved, and the problems that in the prior art, due to the fact that OTA downloading devices of army cell base stations are managed and controlled, firmware downloading and upgrading of NB-IoT terminal equipment are overtime or fail are solved. Therefore, each NB-IoT terminal equipment can download its own update firmware, and the practicability is greatly improved.