If you are serious about selling your console, you should state the manufactured date of the console as well as which firmware it has. Contact Davis support if you cannot determine this information yourself. For example, some data loggers, like WiFi logger, requires that the console have a firmware of at least 1.9. So if the console can be updated only to 1.8, the buyer of your console won’t be able to use the great tool, made in Poland, WiFiLogger!