Upgrading
Upgrading from previous EMS versions
FortiClient EMS supports direct upgrade from EMS 6.2. To upgrade older EMS versions, follow the upgrade procedure outlined in FortiClient and FortiClient EMS Upgrade Paths.
FortiClient EMS 6.4.3 GA supports upgrade from FortiClient EMS 6.4.3 RC1 and RC2.
Downgrading to previous versions
FortiClient EMS does not support downgrading to previous EMS versions.