I tried to download of the new version but my version is not recognized. What can I do?
According to the information on the official forums, it seems that the Updater has major issues with some devices. The only way to fix this is to remove the current version installed on your computer and then access the Support page from Garmin while using Internet Explorer and then the software will install properly as well as the Updater application.
Plugin installation page: https://my.garmin.com/gcpInstall/checkPlugin.htm?target