A method and system for transferring data is disclosed. The method comprises initiating a handshake between an electronics unit onboard a vehicle and an application via a first communication protocol through an onboard gateway; transferring a data file to the gateway from the application via a second communication protocol; storing the data file in the gateway at a storage location; sending a message from the application to the electronics unit, via the first communication protocol, to inform the electronics unit that the data file is available and the storage location of the data file; and pulling the data file from the storage location, via the second communication protocol, to the electronics unit.