INCH and INCH duo version 4.0
First upgrade station with system-4.0.itb file and then with app-4.0.4.itb.
APP-4.0.4.itb can be used only if station is upgraded with system-4.0.itb file first.
CAUTION: if the charging station uses a mobile connection, please check how much data you have leased in the package. Upgrade system file size is aprox 78 MB. If you have less data available in the package, we recommend a local upgrade otherwise additional costs may be incurred by your mobile provider!