Update to version 4.21

Today my TZT informed me on start-up that a new version was available to download, and I did and tried to update when advised of my 2 TZT. After that, it seemed to go part way and after a very long time I noticed both units are still in version 4.11. Is the direct download and update presenting problems and if so what should I do? I am very inetested in this update as I would like to have the active route synchronization with Maxsea working.

Thank you.

The Wi-Fi update is just the application update and very subject to the connection you are using. I personally prefer to upgrade units using SC card. I also suggest the full OS/APP update even if eligible for the app only. The software and instructions are posted under the product page on our web site.