GNU/Linux openSUSE 15 Updating System Guide
Hi! The Tutorial shows you Step-by-Step How to Update Packages & System in openSUSE 15.x Leap GNU/Linux.
And here I explain How to Update Linux openSUSE easily on Command Line.
But at your choice there is also the possibility to see instead: How to Update System with GUI.
Especially relevant: after if the suited result is Not achieved, you may be also interested about How to Upgrade Kernel on openSUSE.
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1. Terminal QuickStart
How to QuickStart with Command Line on openSUSE: