You have several upgrade options:
|Upgrade option:||Applies to:||Comment:|
|ESET PROTECT All-in-one installer (this article)||Windows||This is the recommended option if the existing server has the default installations of MS SQL database and Apache Tomcat (the existing installation was performed via the All-in-one installer).|
Windows and Linux
|Manual component-based upgrade||Linux||Upgrade instructions for advanced Linux users.|
Starting January 2019, Oracle JAVA SE 8 public updates for business, commercial or production use require a commercial license. If you do not purchase a JAVA SE subscription, you can use this guide to transition to a no-cost alternative and install one of the listed supported Java editions.a) To select the already installed Java, click Select a Java installation, select the folder where Java is installed (with a subfolder bin, for example, C:\Program Files\Amazon Corretto\jdk11.0.6_10) and click OK. The installer prompts you if you have selected an invalid path.
Read the Knowledgebase article: [KB7654] Deploy or upgrade ESET endpoint products using ESET PROTECT.