Zooz Z-Wave Plus S2 Double Plug ZEN25 with USB Port

[aruffell (Alex)]

Maybe they are referring to this beta firmware release:

Hub Firmware Beta 0.27.8

Version: 0.27.8 Hub Target: Samsung SmartThings Hub (Hub v2) Samsung SmartThings Hub (Hub v3) (2018) Release Date: 04 Sep 2019 Release Notes: Fixes Fixed issue where, in some cases, the hub failed to relay LAN traffic received on port 39500. Z-Wave: Fixed possible connectivity issues with Multi-Endpoint Devices (Noticeably Fibaro Dimmer 2).