Packages not signed with the official Red Hat keys will not be upgraded. These packages are typically provided by third parties, or they have been modified in some way. There is a high risk of incompatibility with these packages as they have not been verified by Red Hat. For the upgrade assistance, contact the vendors of these packages.
You can find a list of all unsigned packages including their vendors' names in the [link: /root/preupgrade/kickstart/nonrhpkgs] file.


