The 1.64 update is specifically notable for its role in system maintenance and data migration:
Version 1.64 (and its minor iteration 1.65) is the capstone software used by certified Lutron engineers to design, upload, and extract programming for these installations. Lutron HomeWorks Illuminations - Integration Note Lutron Homeworks Illumination 164
The (often referred to as the HW-164 or just the "164") is the central processor for the Homeworks Illumination series. The number "164" refers to its maximum link capacity: it can support up to 164 zone/controller addresses on its primary communication link. if one node fails
Because these units are decentralized, if one node fails, the rest of the house continues to function. A failure in the kitchen 164 does Lutron Homeworks Illumination 164