Try to update a pair of MFD E140W and at the end they were not working:
radar offset (1/3, 2/3)
AIS overlay radar
Radar overlay in the electronic chart.
Welcome to the Raymarine Forum Harry,
Please click
here to view a FAQ addressing this subject. Should the system be interfaced to a source of heading, GPS, AIS data and should any of these data sources have been interfaced to the MFD's NMEA 0183 communications ports, then it would be recommended that you ensure that the port(s) has been correctly configured to match the BAUD rate of the device(s) which has been interfaced to it. It is also recommended that you ensure that you are under way and making way when using COG based features such as the Chart application's 1/3, 2/3 offset feature.