• HA—Updating firmware on an HA cluster requires some additions to the usual steps for a standalone appliance. See “Updating firmware on an HA cluster”.

• Downgrades—Special guidelines apply when you downgrade firmware to an earlier version. See “Downgrading firmware”. In some cases, the downgrade path requires reimaging. Take care to study the release notes for each version in your downgrade path.

• Re-imaging—If you are installing a firmware version that requires a different size of system partition, you might be required to re-image the boot device.