he Update install requires that Civil 3D 2025 is installed.

Civil 3D 2025.2 Update

Civil 3D 2025.2 Update provides enhancements to Dynamo for Civil 3D, Profile View performance, and rail alignment editing and annotation.

Dynamo for Civil 3D users will benefit from new nodes for Civil 3D labels, Pick Point, and industry-standard railway cant parameters.

Learning Dynamo for Civil 3D now is easier, with the addition of sample graphs, in-depth documentation, and predictive node autocomplete for AutoCAD nodes.

Railway designers will benefit from improvements to the Cant Tabular Editor, secondary alignment Cant Profile View Band Styles, better integration to Project Explorer, and more.