I would like to start upgrading our installation, starting with 1.14 to 1.15. I have downloaded the 1.15.8 installer and copied it out to the server. Is there a tutorial somewhere on how to do this upgrade/update?
kconklin https://docs.osticket.com/en/latest/Getting%20Started/Upgrade%20and%20Migration.html
This guide is relevant to even version 1.14.