Firmwares Hitachi HDP725050GLA360 VersionPrevalence GM4OA52A47.566% GM4OA5CA41.814% GM4OA50E5.31% GM4OA57A2.212% GM4OA56A1.77% GM4OA5BA0.885% GM4OA5FA0.221% GM4OA5KA0.221%