[CA] [CA11] Software(System) Updating Advice

[Chuck - Raymarine - Moderator]

WittsEndIII,

The communications issue may be indicative of a problem with the a77 MFD's SeaTalkng communications circuitry or with the cable which you have created connect the MFD to the backbone. The a77 MFD should be connected to a spur (white) socket within the backbone via an appropriate length of spur cable. Bearing in mind that the connection will only be a temporary one to complete the software update, you may want to consider simply unplugging the p70R from its Spur Cable and then connect the a77 MFD to this cable. Should the MFD's select Devices List (HOME->SET-UP->MAINTENANCE->DIAGNOSTICS->SELECT DEVICE) not list the EV-1, then it would indicate a fault with the a77 MFD's SeaTalkng communications circuitry and necessitate updating the EV-1's software via one of the previously referenced options.