Firmwares Hitachi HDP725050GLA360 VersionPrevalence GM4OA52A47.588% GM4OA5CA41.886% GM4OA50E5.263% GM4OA57A2.193% GM4OA56A1.754% GM4OA5BA0.877% GM4OA5FA0.219% GM4OA5KA0.219%