Instructions for upgrading Upgrading to this release requires preparation and an understanding of how the upgrade process works. Read the upgrade instructions in the McAfee Enterprise Security Manager 10.0.0 Installation Guide (PD26817), 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 upgrade to 10.0.x from 9.6.x. Remove Nitro IPS devices from the McAfee ESM System Tree. Note: You cannot upgrade to 10.0.x with a deprecated Nitro IPS device.