thanks to Atri & Neil.... What threw me is that not using the downgrade-nixing switch zypper asks me for the DVD 'openSUSE-20200214-0' which in this case is unreadable (not the first time that this happens for some reason). So I removed it as a repo source with Yast and all went well. TW being a live or hot repo structure I wonder why the DVD was in the repo list at all, technically it becomes obsolete minutes after installation. Even if available the on-line repos would be prioritised I think. So the issue is resolved, remains the question of why the DVD's become unreadable, it's THE reason I had looked into trying to stop downgrades in the first place? -- To unsubscribe, e-mail: opensuse-support+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-support+owner@opensuse.org