Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
Im experiencing a similar issue on a Cisco 3650. If i do an emergency-install it rolls back to the previous version but gives me this error everytime i try to upgrade.
Signature Verification Failed on /flash/cat3k_caa-infra.SPA.03.06.03E.pkg
%IOSX...