Sony Mobile has released a new firmware update for the Concept Marshmallow program, moving it to build number MMB29X.Z1.3587. This new software updates the camera to the latest internal version, although we didn’t notice any external changes in the UI, so there may be some back-end updates. Sony has also provided a fix for the battery indicator showing % when charging. This version also includes the latest InTouch 1.3.1 version. The update should be rolling to all on the Concept firmware now.