Hi @joerg.hoenig, you mentioned creating an anaconda environment for Python 3.12, but those wheels are for Python 3.10 (in fact you will find all of our prebuilt wheels for JetPack 6 are for Python 3.10 because this is the default version of Python that comes with Ubuntu 22.04, which is what JetPack 6 currently ships with)
So I would recommend changing your Python environment to 3.10 and trying to reinstall them again. Or you can rebuilt PyTorch/ect for Python 3.12. You can find a bunch of containerized builders and wheels through GitHub - dusty-nv/jetson-containers: Machine Learning Containers for NVIDIA Jetson and JetPack-L4T