This prober allows you to download updates for any Android device with just a build fingerprint. As long as that device is using Google’s update services, you can download an update for it, provided that Google has an update available.
The project is available here as a Python CLI/GUI application, but if you do not wish to download it, you can also use the web UI here. I recommend using the application, as the web UI is currently a work-in-progress.