Update no Ubunutu 18.04.1 LTS

Prezados,
gostaria de saber como faço para resolver esse problema de atualização no Ubunutu 18.04.1 LTS.

wilians@wilians:~$ sudo apt-get update
Atingido:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Atingido:2 http://security.ubuntu.com/ubuntu bionic-security InRelease
Atingido:3 http://archive.ubuntu.com/ubuntu bionic-updates InRelease
Atingido:4 http://archive.ubuntu.com/ubuntu bionic-backports InRelease
Lendo listas de pacotes... Pronto

-siga os passos 1 e 2
https://www.vivaolinux.com.br/dica/O-que-fazer-apos-instalar-o-Ubuntu-1804-LTS
-depois atualize novamente

Fiz os passos, mas não foi solucionado.
Após update aparece:
sudo apt-get update
sudo apt-get update
Atingido:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Atingido:2 http://archive.canonical.com/ubuntu bionic InRelease
Lendo listas de pacotes... Pronto

-poste sada comando:
cat /etc/apt/sources.list

Ok!

wilians@wilians:~$ cat /etc/apt/sources.list
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu bionic main restricted
deb-src http://archive.ubuntu.com/ubuntu bionic restricted multiverse main universe #Added by software-properties
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu bionic universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu bionic multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse

-vá em programas/atualizações e mude servidor brasil p/ principal
-depois tente atualizar novamente

Ok!

wilians@wilians:~$ cat /etc/apt/sources.list
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://archive.ubuntu.com/ubuntu bionic main restricted
deb-src http://archive.ubuntu.com/ubuntu bionic restricted multiverse main universe #Added by software-properties
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://archive.ubuntu.com/ubuntu bionic universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://archive.ubuntu.com/ubuntu bionic multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ bionic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
deb http://archive.canonical.com/ubuntu bionic partner
# deb-src http://archive.canonical.com/ubuntu bionic partner

# deb-src http://security.ubuntu.com/ubuntu bionic-security main restricted
# deb-src http://security.ubuntu.com/ubuntu bionic-security universe
# deb-src http://security.ubuntu.com/ubuntu bionic-security multiverse


Mudei o servidor para Brasil mas o problema continua o mesmo.

-vc consegue usar o atualizador de programas ?

Sim!

Poste saída comando:
sudo apt update

wilians@wilians:~$ sudo apt update
Atingido:1 http://archive.canonical.com/ubuntu bionic InRelease
Atingido:2 http://br.archive.ubuntu.com/ubuntu bionic InRelease
Lendo listas de pacotes... Pronto
Construindo árvore de dependências
Lendo informação de estado... Pronto

sudo apt upgrade
Poste saída comando