GNU/Linux Lite Updating System Guide
Hi! The Tutorial shows you Step-by-Step How to Update Packages & System in Lite LTS GNU/Linux Desktop.
And here I explain How to Update/Upgrade Linux Lite easily on Command Line.
But at your choice there is also the possibility to see instead: How to Update/Upgrade System with GUI.
Especially relevant: after if the suited result is Not achieved, you may be also interested about How to Upgrade Kernel on Lite Linux.

1. Terminal QuickStart
How to QuickStart with Command Line on Lite Linux:
Here Console Lite Linux QuickStart GuideLink to Step-by-Step Guide on Getting Started with Command Line in Lite LinuxFirst Update the Apt Repo Sources with:
Copysudo apt update
Contents