If you own a valid license, you can:
Before we begin, ensure that your computer meets the system requirements for Lumion 8.5: Lumion 8.5 Material Library Free Download
He needed better materials. Specifically, he needed the high-resolution, physically-based rendering (PBR) assets that were part of the expanded material libraries he saw online. His version of Lumion 8.5 had the standard catalog, but it wasn't cutting it for a project of this scale. If you own a valid license, you can:
In version 8.5, the library included a massive upgrade over previous versions, introducing: If you own a valid license