DATA UPGRADE METHOD AND SYSTEM

The invention provides a data upgrading method and system, and the method comprises the steps: receiving a mode switching instruction broadcasted and transmitted by a control end when a circuit moduleneeds to carry out the data upgrading, and switching an operation mode into an upgrading mode according to the mode switching instruction; wherein each circuit module has different identification numbers; according to a preset receiving sequence, receiving an upgrading data packet sent by the control end based on the fragmentation transmission strategy, the upgrading data packet comprising m pieces of data packets; when the current circuit module receives the upgrading data packet; judging whether the upgrading data packet is an own upgrading data packet or not according to the identificationnumber of the target circuit module carried in the upgrading data packet; if the upgrading data packet is not the own upgrading data packet, forwarding the upgrading data packet to an adjacent circuit module according to a preset forwarding strategy until the upgrading data packet is matched to the target circuit module; and when the target circuit module receives the upgrading data packet, performing data upgrading by utilizing the upgrading data packet.