tobru Is there any log or way to see the reason why no update shows up?
A couple of things to try...
Settings > System > System update > Notification settings
- Enable "All System Updater notifications"
- Enable all (including unused) Notification Categories
Settings > System > System update > Check for updates
Any interesting notifications show up?
Any chance you have disabled Automatic reboot and ignored previous notifications and you haven't rebooted the phone in a long time so that phone has downloaded but not installed the latest Stable Release?