Firmwares Hitachi HDP725050GLA360 VersionPrevalence GM4OA52A47.945% GM4OA5CA41.553% GM4OA50E5.479% GM4OA57A2.055% GM4OA56A1.826% GM4OA5BA0.685% GM4OA5KA0.228% GM4OA5FA0.228%