Node-RED block in Snap4City Microservice library node-red-contrib-snap4city-developer is "iotapp-upgrade">
You can enter the IOTApplication ID in the configuration you want to update. When any type of input is entered, the IOTApplication indicated in the configuration is updated to the latest version available on the platform. With the update the nodes that are present in the IOTApplication are updated with the improvement of those already present or the addition of new nodes.