Question : Updating from such a repository can't be done securely, and is therefore disabled by default. not secured Release' is not signed.
Answered by : hilarious-horse-aqyg6y3nis65
apt-get update --allow-insecure-repositories
Source : https://superuser.com/questions/1331936/how-can-i-get-past-a-repository-is-not-signed-message-when-attempting-to-upgr | Last Update : Wed, 30 Dec 20
Question : Updating from such a repository can't be done securely, and is therefore disabled by default. not secured Release' is not signed.
Answered by : leonard
sudo apt-key adv --keyserver pgp.mit.edu --recv-keys 5C808C2B65558117
Source : https://askubuntu.com/questions/732985/force-update-from-unsigned-repository | Last Update : Sat, 30 Oct 21
Question : Updating from such a repository can't be done securely, and is therefore disabled by default. not secured Release' is not signed.
Answered by : leonard
deb [trusted=yes] file:/media/cdrom0 kali-rolling main contrib non-free
Source : https://superuser.com/questions/1331936/how-can-i-get-past-a-repository-is-not-signed-message-when-attempting-to-upgr | Last Update : Sat, 30 Oct 21
Question : Updating from such a repository can't be done securely, and is therefore disabled by default. not secured Release' is not signed.
Answered by : leonard
deb [trusted=yes] http://www.deb-multimedia.org jessie main
Source : https://askubuntu.com/questions/732985/force-update-from-unsigned-repository | Last Update : Sat, 30 Oct 21