Upgrade Information This section provides key information about upgrading to this software version. Supported Upgrade Paths The following in-service (hitless) upgrade/rollback paths are supported by the OCSLB: VNF—S-CZ8.1.0 to S-CZ8.3.0 PNF—S-CZ7.3.10p4 to S-CZ8.3.0m1p2