root@wirenboard-ACSV3HN6:~# apt-get update Ign:1 http://archive.debian.org/debian stretch InRelease Get:2 http://archive.debian.org/debian-security stretch/updates InRelease [59.1 kB] Get:3 http://archive.debian.org/debian stretch-backports InRelease [78.5 kB] Ign:2 http://archive.debian.org/debian-security stretch/updates InRelease Ign:3 http://archive.debian.org/debian stretch-backports InRelease Get:5 http://archive.debian.org/debian stretch Release [118 kB] Get:4 http://deb.wirenboard.com/wb7/stretch stable InRelease [3,939 B] Err:4 http://deb.wirenboard.com/wb7/stretch stable InRelease Couldn't create temporary file /tmp/apt.conf.jrjynE for passing config to apt-key Get:6 http://archive.debian.org/debian stretch Release.gpg [3,177 B] Ign:6 http://archive.debian.org/debian stretch Release.gpg Hit:7 http://archive.debian.org/debian stretch/main armhf Packages Ign:7 http://archive.debian.org/debian stretch/main armhf Packages Hit:8 http://archive.debian.org/debian stretch/main Translation-en Ign:8 http://archive.debian.org/debian stretch/main Translation-en Hit:7 http://archive.debian.org/debian stretch/main armhf Packages Ign:7 http://archive.debian.org/debian stretch/main armhf Packages Hit:8 http://archive.debian.org/debian stretch/main Translation-en Ign:8 http://archive.debian.org/debian stretch/main Translation-en Ign:7 http://archive.debian.org/debian stretch/main armhf Packages Err:8 http://archive.debian.org/debian stretch/main Translation-en BZ2_bzread: /var/lib/apt/lists/partial/archive.debian.org_debian_dists_stretch_main_i18n_Translation-en.bz2 Read error (-5: DATA_ERROR_MAGIC) Ign:7 http://archive.debian.org/debian stretch/main armhf Packages Fetched 145 kB in 8s (17.3 kB/s) Reading package lists... Done W: GPG error: http://archive.debian.org/debian-security stretch/updates InRelease: Couldn't create temporary file /tmp/apt.conf.vcHpsr for passing config to apt-key W: The repository 'http://archive.debian.org/debian-security stretch/updates InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: GPG error: http://archive.debian.org/debian stretch-backports InRelease: Couldn't create temporary file /tmp/apt.conf.M28Y8w for passing config to apt-key W: The repository 'http://archive.debian.org/debian stretch-backports InRelease' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://deb.wirenboard.com/wb7/stretch stable InRelease: Couldn't create temporary file /tmp/apt.conf.jrjynE for passing config to apt-key W: GPG error: http://archive.debian.org/debian stretch Release: Couldn't create temporary file /tmp/apt.conf.U1bqbG for passing config to apt-key W: The repository 'http://archive.debian.org/debian stretch Release' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details. W: Failed to fetch http://deb.wirenboard.com/wb7/stretch/dists/stable/InRelease Couldn't create temporary file /tmp/apt.conf.jrjynE for passing config to apt-key E: Failed to fetch http://archive.debian.org/debian/dists/stretch/main/i18n/Translation-en BZ2_bzread: /var/lib/apt/lists/partial/archive.debian.org_debian_dists_stretch_main_i18n_Translation-en.bz2 Read error (-5: DATA_ERROR_MAGIC) W: Some index files failed to download. They have been ignored, or old ones used instead.