A method of updating a first device (e.g., one or more locking devices) to reflect information located on a second device (e.g., a server) is provided, where the first device and the second device cannot communicate directly with one another. The method may include employing a third untrusted device (e.g., a mobile device) temporarily as an intermediary between the first device and second device. The method may include receiving, at the first device and from a third device, a request for the first device to communicate with the third device. In response to determining that the third device is authorized to communicate with the first device, the first device may receive information from the third device that was provided by the second device. The first device may transmit at least one message to the third device that is to be provided to second device.