如果是本地没有Kali环境，你可以在Kali下载页面https://www.kali.org/downloads/上找到ISO和Torrent的下载链接。这上面既有全新安装的ISO文件，也提供安装好系统的vmware和virtual box虚机文件。目前最新的Version更新到2018.3。
如果您已经安装了Kali系统，您可以按照以下方式轻松升级。
step01:
查看配置文件，默认设置的是官方更新源
root@kali:~# cat /etc/apt/sources.list
deb http://http.kali.org/kali kali-rolling main non-free contrib
step02:
更新系统
root@kali:~# apt update && apt -y full-upgrade
apt update //更新可用软件包列表
apt full-upgrade //通过卸载|安装|升级等方式来更新系统
step03:
Then after running apt -y full-upgrade, you may require a reboot before checking:
step04:
验证
root@kali:~# grep VERSION /etc/os-release
VERSION="2018.3"
VERSION_ID="2018.3"
或
root@kali:~# uname -a
附其它更新源：
#中科大 deb http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib deb-src http://mirrors.ustc.edu.cn/kali kali-rolling main non-free contrib #阿里云 deb http://mirrors.aliyun.com/kali kali-rolling main non-free contrib deb-src http://mirrors.aliyun.com/kali kali-rolling main non-free contrib #清华大学 deb http://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free deb-src https://mirrors.tuna.tsinghua.edu.cn/kali kali-rolling main contrib non-free #浙大 deb http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free deb-src http://mirrors.zju.edu.cn/kali kali-rolling main contrib non-free #东软大学 deb http://mirrors.neusoft.edu.cn/kali kali-rolling/main non-free contrib deb-src http://mirrors.neusoft.edu.cn/kali kali-rolling/main non-free contrib #官方源 deb http://http.kali.org/kali kali-rolling main non-free contrib deb-src http://http.kali.org/kali kali-rolling main non-free contrib