This guide describes how to upgrade an existing dnclient installation.
First, download the updated dnclient version from https://admin.defined.net/downloads/, then...
Linux / macOS
sudo dnclient stop
sudo dnclient uninstall
cp ./dnclient $LOCATION_WHERE_YOU_INSTALLED_DNCLIENT/dnclient
chmod +x $LOCATION_WHERE_YOU_INSTALLED_DNCLIENT/dnclient
sudo dnclient install
sudo dnclient start
dnclient -version # check your updated version!
Run the installer MSI file and run the install step against the same directory you originally installed dnclient in. This will overwrite the previous installation and upgrade to the new one.
# check your updated version!
& 'C:\Program Files\Defined Networking\DNClient\dnclient.exe' -version
iOS / Android
Use the default app upgrade method for your mobile app store.