Update repository sources

The GuruPlug comes with Debian 5 installed, which reached its end of life some time ago. As a result, the repository paths have changed. When trying to update or install new software we will get errors from the default repositories. The solution is to update the sources list to point to the archived repositories.

Update the sources to point to the archived repositories

If we check our current sources for Debian 5 we get the following:

cat /etc/apt/sources.list

deb http://ftp.us.debian.org/debian/ lenny main contrib non-free
deb http://http.us.debian.org/debian stable main contrib non-free
deb http://security.debian.org lenny/updates main contrib non-free
deb http://www.backports.org/debian lenny-backports main contrib non-free
deb http://10.82.108.51/kedars/sheevaplug_wifi/builds/packages/ binary/

We should replace the repository paths with the archived ones:

deb http://archive.debian.org/debian/ lenny main contrib non-free

Then we can update and upgrade our distro:

sudo apt-get update
sudo apt-get upgrade

Sources for Debian 11

deb http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware

deb-src http://deb.debian.org/debian/ bookworm main contrib non-free non-free-firmware

deb http://security.debian.org/debian-security bookworm-security main contrib non-free non-free-firmware
deb-src http://security.debian.org/debian-security bookworm-security main contrib non-free non-free-firmware

# bookworm-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmware
deb-src http://deb.debian.org/debian/ bookworm-updates main contrib non-free non-free-firmware

Troubleshoot

If we get errors related to authentication and keys because of outdated credentials we can do the following:

Manually add keys

Some packages may have expired keys, which are necessary for the OS to verify their authenticity. We can manually add the missing keys to our OS keyring:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys <KEY_ID-THAT-IS-MISSING>

Bypass authentication

If we still have problems with expired GPG keys we can bypass any security with --allow-unauthenticated flag:

apt-get install {package} --allow-unauthenticated

https://stackoverflow.com/questions/29070471/gpg-error-http-archive-debian-org-lenny-updates-release-the-following-signat
https://serverfault.com/questions/337278/debian-how-can-i-securely-get-debian-archive-keyring-so-that-i-can-do-an-apt-g