Hello, @petrus.hyvonen !
I am facing the same issue in Python. I have the most recent version of Orekit and I also can’t find the PythonTileUpdater.
I already created a different environment, downgraded, upgraded in order to test the issues, and it still persists on Orekit version: 12.1.2.
Yesterday, I posted in the forum (Set Digital Elevation Model on Rugged Builder) where I was capable of importing it once, but I got with an error NotImplementedError: ('instantiating java class', <class 'tu2.DEMTileUpdater'>). Yet, I could not reproduce this later, only with the TileUpdater function.
Is it possible that there still is an issue with the library, or am I missing something?