Welcome to the Raymarine Technical Forum Dave,
C-Series Classic MFDs (i.e. C70, C80, and C120) lack support for SeaTalkhs communications protocol, which is central to WiFi integration with Raymarine products.
While Raymarine's E-Series Classic MFDs (i.e. E80, E120), C-Series Widescreen MFDs, (i.e. C90W, C120W, C140W), and E-Series Widescreen MFDS (i.e. E90W, E120W, E140W) feature support for SeaTalkhs communications protocol Raymarine dropped support for WiFi integration with these MFDs in 2011 for the reasons specified within discussion topic Wifi Router to Network Switch to display e120w on my iPad.
Support for WiFi integration is now limited to Raymarine's recently introduced c/e-Series MFDs (c95, c97, c125, c127, e7, e7D, e95, e97, e125, e127).
There are some third party NMEA 0183 to WiFi interfaces (ex. Digital Yacht WLN10) available in the market. As C-Series Classic MFDs feature a NMEA 0183 I/O port, you may want to consider such a device.
Should AIS data be involved then you will need a NMEA 0183 multiplexer supporting both 38400 and 4800 BAUD rates.
The requested information will be forwarded to the e-mail address associated with your Forum account.
Could you also email me the firmware and instructions and any other notes, please?
I have 2 C140W's
The requested files were sent on 09/24/2013 10:55:40 AM. I will send them again.
The requested files have been e-mailed to you as well.