The following table lists the new features that have upgrade or downgrade impact. Before you upgrade ESM components to or downgrade from release 4.1, make sure you understand the changes that will occur in the configuration.
ESM Upgrade Path
You can upgrade to ESM 4.1 from any ESM 4.0 release.
Traps Upgrade Path
If you participated in the Traps beta program, you cannot upgrade from the Traps 4.1 beta version to a Traps 4.1 release.
Automated Content Updates
By default, the ESM Server now automatically downloads and distributes new content updates when they are available. To enable the ESM Server to automatically check for updates, you must enable SSL/TLS 1.2 communication between the ESM Server and the updates server (updates.paloaltonetworks.com) on port 443.