Update update script.
Update update script.

- throw `update_failed' while check error.

sdgdsffdsfff/FlexGW,alibaba/FlexGW,alibaba/FlexGW,sdgdsffdsfff/FlexGW,sdgdsffdsfff/FlexGW,alibaba/FlexGW,alibaba/FlexGW,sdgdsffdsfff/FlexGW