DATA UPDATE METHOD AND SYSTEM

原文（中国語）

A data update method includes: a step of creating, by a management server, an access lock valid for a predetermined period and an access key capable of unlocking the access lock; a step of transmitting the access key to each of in-vehicle terminals of the plurality of vehicles, which are communicably connected with the management server; a step of making, by each of the in-vehicle terminals, a distribution request to a data distribution apparatus for distributing the update data by using the access key; and a step of determining by the data distribution apparatus, whether the access key used for the distribution request is capable of unlocking the access lock, and when determining that the access key is capable of unlocking the access lock, distributing the update data to an in-vehicle terminal having issued the distribution request.