Abstract: A computer-implemented method for upgrading software of a plurality of gateways, includes analyzing the status logs of a plurality of gateways to determine whether the gateways are in a normal status. The method further includes generating a device information file (INF) for each of the one or more gateways in a normal status, and triggering the gateways in the normal status to download the INF from the INF server. After downloading the INF, the one or more gateways in the normal status connect to the image server at a respective update time listed in the INF, and download a software update from the image server.

Abstract: A fertilizer dispensing device includes a tubular body which confines a chamber for receiving granular fertilizers having a first dimension, and which is adapted to be inserted into and buried by soil. The fertilizer dispensing device has a dispensing port formed through the tubular body. The dispensing port has a second dimension smaller than the first dimension so that the granular fertilizers could be carried through the port and into the soil when dissolved.