Debian 8 (Jessie) repo updated-2023

This worked for Debian 8 (Jessie)

replace original /etc/sources.list with:

deb http://archive.debian.org/debian/ jessie main non-free contrib
deb-src http://archive.debian.org/debian/ jessie main non-free contrib
deb http://archive.debian.org/debian-security/ jessie/updates main non-free contrib
deb-src http://archive.debian.org/debian-security/ jessie/updates main non-free contribapt-update

It will give a keyring error. I tried both:

apt-get install debian-archive-keyring
apt-key adv --recv-keys --keyserver hkp://keyserver.ubuntu.com 7638D0442B90D010

Few errors will throw on console, run-

apt-upgrade

and upgraded everything. It gave me a locale error which I fixed with

dpkg-reconfigure locales
(set to en_US.UTF-8)