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

• Downgrades—If you are downgrading the firmware to a previous version, and the settings are not fully backwards compatible, the system might remove incompatible settings or use the default values for that version of the firmware. You might need to reconfigure some settings.

• 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. Consult the release notes. In that case, do not install the firmware using this procedure. Instead, see “Restoring firmware (“clean install”)”.