My TRB255 works in a private APN without access to the public Internet. Therefore, and also for security purposes, I would like to be able (similar to competitors' devices) to update the firmware via an FTP server on the corporate network. The device periodically (e.g. once a day) checks whether there is a newer version of the software on the configured FTP server in the given location. If a new software version were available, TRB255 would update it.