Download&Extract the zip file, there are 2 firmware files inside it, one is for BACnet version, another is for Modbus version.
For CCN Gateway with firmware version prior to v3.00, please go to the bottom of page.
3.05 2025.02.26 Download
Fixs bug that may crash the daemon when there is collision on the CCN bus.
Updates BACnet ms/tp driver from BACRouter 6.09