Ubuntu 12.04 - apt-get install (404 Not Found)

Note: solution for '404  Not Found'

- vi /etc/apt/sources.list
- replace

deb mirror://mirrors.ubuntu.com/mirrors.txt precise main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt precise-updates main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt precise-backports main restricted universe multiverse
deb mirror://mirrors.ubuntu.com/mirrors.txt precise-security main restricted universe multiverse

- sudo apt-get update
- sudo apt-get install packageName