Hey guys,
One of the biggest questions at shows or events that I come across from anglers is "how do I update my card?" or "How long does it take to register or update?" Here is a great How-To article and also a video from Navionics that is on the process of updating your Navionics card from the very beginning of the process, check it out:

https://navionics.secure.force.com/...cle/How-To-Register-And-Update-Your-Chip

https://www.youtube.com/watch?v=BCufeb0eF8I