Hello Manjaro User! This Tutorial Shows You Step-by-Step How-to Update and Upgrade Manjaro GNU/Linux.
Especially relevant: also if an Software Update App is available the Best Way for Updating/Upgrading is still using pacman on Shell.
Open Terminal Window
(Press “Enter” to Execute Commands)
Then Update the pacman Repositories
sudo pacman -Syy
Finally Update/Upgrade Manjaro System
sudo pacman -Su