Offline for a few years... update needed!

[Quarnero]

@rootapoottoot

I really appreciate you taking the time and effort to walk me through this.

Thanks! But now please read (study) carefully:

@Quarnero

please proceed with downloading related package and:
cd Downloads −− or any other related folder
sudo dpkg --install pureos-archive-keyring_2021.11.0_all.deb
sudo apt update
sudo apt upgrade