@romil Download the latest installer from here https://github.com/ubports/ubports-installer for your system and install the latest UBports version of Ubuntu Touch. You appear to be running the old Canonical version of Ubuntu Touch for which support has stopped. We also have a French group if that is easier https://t.me/UBports_French and aWelcome and Install group if you need them too https://t.me/WelcomePlus. It might also be better to edit the title of this post to "Aquaris Tablet update " or such rather than just your user name use the three vertical dots to the right for options.