可以这样更新你的metsploit

用leafpad打开，方便复制粘贴：

leafpad /etc/apt/sources.list

然后复制下面的源覆盖原本的：

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kali更新源
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
#163 DEBIAN源
deb http://mirrors.163.com/debian wheezy main non-free contrib
deb-src http://mirrors.163.com/debian wheezy main non-free contrib
deb http://mirrors.163.com/debian wheezy-proposed-updates main non-free contrib
deb-src http://mirrors.163.com/debian wheezy-proposed-updates main non-free contrib
deb-src http://mirrors.163.com/debian-security wheezy/updates main non-free contrib

开始更新：

apt-get update
apt-get  install metasploit-framework

问题1：如果更新时显示update无效的错误！

像这样：

root@kali:~# apt-get update 
Get:1 http://mirrors.aliyun.com/kali kali-rolling InRelease [30.5 kB]
Ign:2 http://mirrors.163.com/debian wheezy InRelease       
Ign:3 http://mirrors.163.com/debian wheezy-proposed-updates InRelease
Err:1 http://mirrors.aliyun.com/kali kali-rolling InRelease
  The following signatures were invalid: EXPKEYSIG ED444FF07D8D0BF6 Kali Linux Repository <devel@kali.org>

可以这样操作解决：

root@kali:~# wget -q -O - https://archive.kali.org/archive-key.asc | apt-key add
apt-get clean
apt-get update

问题2. 如果报：

E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

解决如下：

apt --fix-broken install

附：如何更新kali系统：

#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

#重庆大学
#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

保存后之后回到命令行下执行命令：

apt-get update && apt-get upgrade && apt-get dist-upgrade

apt-get clean #删除以下载的包
reboot #重新启动

over~

为美好的生活奋斗！