A new image with a message as shown below is downloaded as soon a new dashborad version is available, usually at login but it can also happen during an ongoing session.
To then upgrade to the new version, do any of the following:
- Refresh the current page (F5)
- Press the Update button in the prompt displayed as shown in the picture above.
- Press the Update button in the dashboard header as shown in the following picture. This button does not disappear like the prompt.