After getting PAM-UI-2730 and reviewing KB 196667, the upgrade bin was archived to a zip file. However, the Management Console gives the following error when trying to upload the zip file.
PAM-UI-2728: Could not extract files from uploaded ZIP:
When the Management Console uploads the ZIP file, it will put the ZIP in the /tmp directory. It will then unzip the file to a new directory in /tmp, then search that new directory for the bin file. If there is no bin file, the Management Console will give the PAM-UI-2728 error.
For example, the following ZIP file will fail because it is a folder.
PAM Management Console
When uploading a ZIP file to the Management Console, either make sure the ZIP only contains the bin file or use the ZIP file downloaded directly from the Support portal.
KB 196667: https://knowledge.broadcom.com/external/article?articleId=196667
PAM Solutions & Patches: https://techdocs.broadcom.com/us/product-content/recommended-reading/technical-document-index/ca-privileged-access-manager-solutions-patches.html?r=2