Watch the video:
Timestamps:
0:00 - The "No longer has a Release file" apt error
0:15 - What causes this?
0:24 - Check installed Ubuntu version & Check if it's supported
1:10 - Possible solutions
1:20 - How to update Ubuntu from EOL (End-of-Life) Versions
1:30 - Update sources
2:13 - Update manager
2:25 - Update Desktop Environment
3:00 - Kernal Dependencies
3:45 - Update Ubuntu from EOL
5:17 - Post updateUsing an older version of Ubuntu, and can no longer use Apt, Update or have other issues with “Release no longer has a Release file”? This quick guide shows you how to bring an older install up-to-date with built-in tools. Get older LTS versions to latest, and more.
Ubuntu supported versions: https://wiki.ubuntu.com/Releases
Offiial info (All covered in this video): https://help.ubuntu.com/community/EOLUpgrades
