Method for updating firmware of radio frequency identification reader through network system

A method for updating firmware of a plurality of radio frequency identification (RFID) readers, wherein each of the RFID readers is connected to a remote management host via a gateway and a network system, the management host containing at least one set of reader firmware update data, the RFID reader comprising a microprocessor, a radio frequency transceiver module, a memory unit and a gateway connection interface, the RFID reader being connected to the gateway through the gateway connection interface, the memory unit comprising a firmware data storage section that stores therein at least one set of firmware data, the method comprising the following steps:

• (a) the management host issuing an update message to the gateway;
• (b) the gateway comparing the update message with the firmware data stored in the firmware data storage section of the memory unit of each of the RFID readers to generate a reader update request sequence message to the management host;
• (c) the management host generating a reader updating designation message to the gateway in accordance with the reader update request sequence message;
• (d) the management host transmitting the reader firmware update data to the gateway;
• (e) the gateway transmitting the reader update data to the RFID readers;
• and
• (f) the microprocessor of the RFID reader storing the reader firmware update data to the firmware data storage section of the memory unit.