I have created a blog/post on an external site with a video to download, showing Yast - Software Management and using ‘Update All’ options for package update with the Filter By Repo option.
The video is 5.7MB when extracted.
Thats a great visual how to. A good tool to refer others to when confronted with update issues… 
Thanks.
Thanks. Sorry it had to be a download. I think some will not like that. But you get a better quality result than from a service like youtube. And I have youtube blocked in my router firewall anyway.