A system for data loading in a vehicle, the system comprising: an onboard vehicle electronics unit; an onboard switch and storage unit in operative communication with the onboard vehicle electronics unit; and a cabin gateway onboard the vehicle in operative communication with the onboard switch and storage unit and capable of operative communication with a portable device and one or more wide area networks, the cabin gateway executing instructions to perform a process to: receive a data selection from the portable device in response to a first user input on the portable device when the cabin gateway is in operative communication with the portable device, initiate a remote data transfer of data corresponding to the data selection from one or more ground servers through the one or more wide area networks to the vehicle, store the data corresponding to the data selection in a memory of the cabin gateway or the onboard switch and storage unit, after storing the data corresponding to the data selection, receive a data load instruction from the portable device in response to a second user input on the portable device when the cabin gateway is in operative communication with the portable device, and in response to receiving the data load instruction, cause the stored data to be loaded into the vehicle electronics unit. an onboard vehicle electronics unit; an onboard switch and storage unit in operative communication with the onboard vehicle electronics unit; and a cabin gateway onboard the vehicle in operative communication with the onboard switch and storage unit and capable of operative communication with a portable device and one or more wide area networks, the cabin gateway executing instructions to perform a process to: receive a data selection from the portable device in response to a first user input on the portable device when the cabin gateway is in operative communication with the portable device, initiate a remote data transfer of data corresponding to the data selection from one or more ground servers through the one or more wide area networks to the vehicle, store the data corresponding to the data selection in a memory of the cabin gateway or the onboard switch and storage unit, after storing the data corresponding to the data selection, receive a data load instruction from the portable device in response to a second user input on the portable device when the cabin gateway is in operative communication with the portable device, and receive a data selection from the portable device in response to a first user input on the portable device when the cabin gateway is in operative communication with the portable device, initiate a remote data transfer of data corresponding to the data selection from one or more ground servers through the one or more wide area networks to the vehicle, store the data corresponding to the data selection in a memory of the cabin gateway or the onboard switch and storage unit, after storing the data corresponding to the data selection, receive a data load instruction from the portable device in response to a second user input on the portable device when the cabin gateway is in operative communication with the portable device, and in response to receiving the data load instruction, cause the stored data to be loaded into the vehicle electronics unit.