The flashing Red Error LED indicates that your NAVLink2 has quite an early version of firmware. As you can imagine, there are loads of different NMEA 2000 devices installed on boats, of varying age and firmware versions and since we released NAVLink2, we have come across quite a few “odd situations” where unexpected combinations of data have caused our “software watchdog” to detect an issue and restart the NAVLink2.

In each of these cases, we have had to release a firmware update for the NAVLink2, to fix the issue. We can update your unit to the very latest version (V2.70) for you free of charge, but you will need to post it back to our UK office following the procedure detailed in this FAQ: https://support.digitalyacht.co.uk/question/returning-a-product-to-our-uk-office-for-service/