Furuno FELCOM 250

 12.3 BDE Software Updating Tool
12-18
Note) When you have no IP address prepared for maintenance purposes
The system cannot be set to maintenance mode, and therefore will be “Fail”. 
Reference)
When updating the CommUnit software, the system will switch to maintenance mode,
and the MODEM software will be updated via the HUB.

MODEM

HUB

 PC
Communication Control Unit
Fail