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It will say things are up to date even when there is an entertainment/game or nav update. You can easily rule out a nav update, but entertainment/game updates are pretty much invisible unless you just happen to catch the download/install - its not unheard of for them to get stuck and need a request to Tesla to get them to fix it - that can be checked under each game to see if any are waiting for updates.
This one got stuck so I knew exactly when Tesla were going to push a refresh and managed to catch it in progress - game updates are very small so download/install quickly.