Installation information Upgrading to this release requires preparation and an understanding of how the upgrade process works. Read the update instructions in the McAfee Enterprise Security Manager 10.2.0 Installation Guide on the Knowledge Center. Before you can upgrade: Verify that your current McAfee ESM version is 9.6.x (or later). Note: You can only update to 10.x from 9.6.x or higher. Remove Nitro IPS devices from the McAfee ESM System Tree. Note: You cannot update to 10.x with a deprecated Nitro IPS device. Important: After completing the update, and before logging in for the first time, clear your browser cache. Not doing so may cause issues when you log in.