sudo vi /etc/apt/sources.listspa
#163get
deb http://mirrors.163.com/debian wheezy main non-free contrib
deb http://mirrors.163.com/debian wheezy-proposed-updates main contrib non-free
deb-src http://mirrors.163.com/debian wheezy main non-free contrib
deb-src http://mirrors.163.com/debian wheezy-proposed-updates main contrib non-free
deb http://mirrors.163.com/debian-security wheezy/updates main contrib non-free
deb-src http://mirrors.163.com/debian-security wheezy/updates main contrib non-free
#debian
#deb http://http.us.debian.org/debian wheezy main contrib non-free
#deb http://non-us.debian.org/debian-non-US wheezy/non-US main contrib non-free
#deb http://security.debian.org wheezy/updates main contrib non-freeit
## china ftp
deb http://ftp.cn.debian.org/debian/ wheezy main contrib non-free sed
deb-src http://ftp.cn.debian.org/debian/ wheezy main contrib non-free date
deb http://ftp.cn.debian.org/debian/ wheezy-proposed-updates main contrib non-free debian
deb-src http://ftp.cn.debian.org/debian/ wheezy-proposed-updates main contrib non-free im
deb http://ftp.cn.debian.org/debian/ wheezy-backports main contrib non-free di
deb-src http://ftp.cn.debian.org/debian/ wheezy-backports main contrib non-free vi
# debian security updates
deb http://security.debian.org/ wheezy/updates main contrib non-free
deb-src http://security.debian.org/ wheezy/updates main contrib non-free
# multimedia
deb http://deb-multimedia.org wheezy main non-free
apt-get update
apt-get upgrade