How to upgrade GnuPG with version >2.2.8 in Ubuntu 16.04.2 LTS? When I enter gpg --version, I get gpg (GnuPG) 1.4.20. When I enter gpg2--version, I get gpg (GnuPG) 2.1.11. I also have Thunderbird with version 52.2.1. What commands should I enter or what files should I install to upgrade GnuPG? Do I need to upgrade Thunderbird?
But I am still confused of how to do this. I am just a normal user and worry that I would ruin something. I would be grateful if I could get some help like step by step ”How to” guide.