1.8.159 Version cannot connect to the bound host, looping between Online and Offline states!
Firmware 1.8.159 was taken back, because a M2M issue... now 1.8.120 is linked as master firmware.
Loping M2M issues can be caused by setting BOTH masters to connect to each other. Only ONE should be told to manage the connection. Otherwise they fight over it.
just want to note that v1.8.171 is released and linked to the DVX-4K product page.