You can download several essential components for your AppDynamics environment, including Application Agents, Enteprise Console and Contoller, and Events Service, directly from our Downloads page.
Other components, especially ones pertaining to EUM products, can be downloaded or installed from other locations:
Additional Resources
To make sure you complete all the tasks necessary for a successful release upgrade to a newer version, we recommend following the relevant instructions in our upgrade checklists. These guides are not release-specific and can be referenced for any release: AppDynamics Upgrade Checklist For Any Release