Não consigo instalar nenhum pacote!!! [RESOLVIDO]

Olá, pessoal
Estou nos estados unidos fazendo um doutorado sanduiche. Não sei se a mudança pode ter influenciado no meu ubuntu, mas desde que cheguei aqui não consigo instalar nada no meu computador!!
Ao pedir para dar update obtenho a seguinte resposta
Ign http://archive.ubuntu.com wily-security/universe Translation-en
Baixados 9.477 B em 39s (238 B/s)
W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/restricted/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/restricted/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/universe/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily/multiverse/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/restricted/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/restricted/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/universe/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-updates/multiverse/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/restricted/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/restricted/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/universe/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-backports/multiverse/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/restricted/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/universe/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/multiverse/source/Sources 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/restricted/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/universe/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/restricted/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/universe/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

W: Falhou ao buscar http://archive.ubuntu.com/ubuntu/dists/wily-security/multiverse/binary-i386/Packages 404 Not Found [IP: 91.189.88.161 80]

E: Falhou o download de alguns ficheiros de índice. Foram ignorados ou os antigos foram usados em seu lugar.


A internet está funcionando normalmente, mas não consigo fazer download pelo terminal de nada.
Alguma sugestão?

Ubuntu 15.10 não tem mais suporte.

Ubuntu 15.10 Wily Werewolf foi lançado em outubro/2015 e está sem suporte desde julho/2016
Faça bkp de seus arquivos e instale Ubuntu-16.04.3-lts que terá suporte até abril/2021

Está certo, obrigada!
Vou fazer o upgrade.

Faça bkp e instalação limpa a partir pendrive ou DVD do 16.04