John, you need to update the aircraft and batteries not through the app but via the firmware file which must be loaded onto the MicroSD card and loaded into the camera.
The remote and app must NOT be on during this process.
There are quite a few threads on the update process and DJI have some instructions on the firmware update process on the Inspire downloads page.
Have a read up and if you have anymore questions then shout out on the forum and someone will be along to help.