Data updating method, device, system and server

The present invention is applicable to the field of automotive electronics and provides a data updating method. The method includes: receiving an instruction for obtaining an update file corresponding to a predetermined model, sending a predetermined model update file obtaining command to a server, so that the server, according to the command, Matching the update file corresponding to the predetermined model with the update file corresponding to the plurality of pre-stored models, and sending the updated file corresponding to the found predetermined model to the data updating apparatus, and the data updating apparatus determines, according to the acquired Of the predetermined model corresponding to the update file to update the ECU data of the vehicle. The method sends the system data of different vehicle models to the server for backup. When the automobile users need to update a certain data or some data of its own system, the method can obtain the corresponding updated data directly from the server, which i