Dengan terminal :
1. Buka terminal
2. Ketikkan :
nano /etc/apt/sources.list
3. Tambahkan repository di bagian bawah dan jangan pernah mengganti repository yang sudah ada, karena dapat menyebabkan error saat update atau install.Contoh : Jika sudah terdapat repository di file sources.list, tambahkan repository pada bagian paling bawah.
Sebelum di tambahkan repository :
deb http://httpredir.debian.org/debian jessie main
deb-src http://httpredir.debian.org/debian jessie main
deb http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie main
deb http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie-updates main
Sesudah di tambahkan :
deb http://httpredir.debian.org/debian jessie main
deb-src http://httpredir.debian.org/debian jessie main
deb http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie-updates main
deb http://security.debian.org/ jessie/updates main
deb-src http://security.debian.org/ jessie/updates main
5. Tekan tombol CTRL + Xdeb-src http://httpredir.debian.org/debian jessie main
deb http://httpredir.debian.org/debian jessie-updates main
deb-src http://httpredir.debian.org/debian jessie-updates main
deb http://security.debian.org/ jessie/updates main
deb-src http://security.debian.org/ jessie/updates main
6. Tekan Y dan enter.
7. Lakukan update.
ٱلْحَمْدُ لِلَّهِ رَبِّ
ٱلْعَٰلَمِين