A method of updating the system software of a plurality of devices interconnected in a local network, the method comprising: receiving, from a remote management server, by one of the plurality of devices acting as a remote management client, a request for an update, the request comprising resource location information of an update archive corresponding to the request for update; sending, by the remote management client, the resource location information to the other devices of the plurality of devices; receiving, by the remote management client, a participation acknowledgment message from at least one of the plurality of devices to which the resource location information has been sent and which participate in the update; updating the system software of the devices participating in the update according to a predefined sequence of update statuses: sending, by the devices participating in the update and having reached a next update status out of the predefined sequence of update statuses, a notification destined to other devices participating in the update that the next update status has been reached; pausing the update, by the devices participating in the update and having reached the next update status, until all devices participating in the update have notified (S38, YES) that they have also reached the same next update status; continuing the update, by the devices participating in the update, until all devices participating in the update have notified (S14, YES) that they have reached a final update status; and receiving, by the remote management client, when all devices participating in the update have reached the final update status of said predefined sequence of update statuses, a message indicating successful accomplishment of said update. receiving, from a remote management server, by one of the plurality of devices acting as a remote management client, a request for an update, the request comprising resource location information of an update archive corresponding to the request for update; sending, by the remote management client, the resource location information to the other devices of the plurality of devices; receiving, by the remote management client, a participation acknowledgment message from at least one of the plurality of devices to which the resource location information has been sent and which participate in the update; updating the system software of the devices participating in the update according to a predefined sequence of update statuses: sending, by the devices participating in the update and having reached a next update status out of the predefined sequence of update statuses, a notification destined to other devices participating in the update that the next update status has been reached; pausing the update, by the devices participating in the update and having reached the next update status, until all devices participating in the update have notified (S38, YES) that they have also reached the same next update status; continuing the update, by the devices participating in the update, until all devices participating in the update have notified (S14, YES) that they have reached a final update status; and receiving, by the remote management client, when all devices participating in the update have reached the final update status of said predefined sequence of update statuses, a message indicating successful accomplishment of said update. sending, by the devices participating in the update and having reached a next update status out of the predefined sequence of update statuses, a notification destined to other devices participating in the update that the next update status has been reached; pausing the update, by the devices participating in the update and having reached the next update status, until all devices participating in the update have notified (S38, YES) that they have also reached the same next update status; continuing the update, by the devices participating in the update, until all devices participating in the update have notified (S14, YES) that they have reached a final update status; and receiving, by the remote management client, when all devices participating in the update have reached the final update status of said predefined sequence of update statuses, a message indicating successful accomplishment of said update.