Kali

Connect WPA wifi network

Need the wpasupplicant package

sudo apt-get install wpasupplicant

Put your SSID and password into /etc/wpa_supplicant.conf

network={
    ssid="ssid_name"
    psk="password"
}

Assuming the interface is wlan0:

sudo wpa_supplicant -B -i wlan0 -c /etc/wpa_supplicant.conf
sudo dhclient wlan0

Add Repository

Edit the sources file:

sudo nano /etc/apt/sources.list

Add Standard Repository:

deb http://http.kali.org/kali kali-rolling main non-free contrib

Find faster Mirrors

http://http.kali.org/README.mirrorlist

Add mirror repositories:

http://ftp.yzu.edu.tw/Linux/kali kali-rolling main non-free contrib
http://kali.cs.nctu.edu.tw/kali kali-rolling main non-free contrib
http://mirrors.neusoft.edu.cn/kali kali-rolling main non-free contrib
http://ftp.harukasan.org/kali kali-rolling main non-free contrib
http://kali.download/kali kali-rolling main non-free contrib