Abstract: Disclosed are a triggering method, device and system for a device management (DM) session and a computer storage medium. Herein, the method includes: acquiring firmware version information corresponding to a latest software upgrade package, here the firmware version information is used for determining by a terminal device whether to send a DM session request to a server and whether to initiate a Firmware Over The Air (FOTA) update operation; and sending a notification message including the firmware version information.

Abstract: The present disclosure provides a method for transmitting a large object, after a server establishes a session with a client, the method includes: the server divides a pre-transmitted large object into data blocks, and transmits one by one in sequence acquired data blocks and their sizes to the client; the client determines whether a received data block is transmitted successfully, if the received data block is transmitted successfully, the data block is saved, and a current data block transmission success message is returned to the server; if the received data block is not transmitted successfully, an end session request message or a re-transmitting current data block request message is returned to the server; and the server transmits the corresponding data block and its size or ends the session according to the received messages. The present disclosure further provides a system for transmitting a large object.

Abstract: The present disclosure provides a method for transmitting a large object, after a server establishes a session with a client, the method includes: the server divides a pre-transmitted large object into data blocks, and transmits one by one in sequence acquired data blocks and their sizes to the client; the client determines whether a received data block is transmitted successfully, if the received data block is transmitted successfully, the data block is saved, and a current data block transmission success message is returned to the server; if the received data block is not transmitted successfully, an end session request message or a re-transmitting current data block request message is returned to the server; and the server transmits the corresponding data block and its size or ends the session according to the received messages. The present disclosure further provides a system for transmitting a large object.