How to upgrade from an EOL (End Of Life) Ubuntu MATE release (23.04 will be EOL in January 2024)

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So, if you find that your Ubuntu MATE 23.04 (Lunar Lobster) install is EOL (End Of Life), follow these steps to upgrade to Ubuntu MATE 23.10 (Mantic Minotaur):

  1. Open a terminal and type in sudo nano /etc/apt/sources.list and change all ‘archive.ubuntu.com’ (Or a mirror that you’re using) entries to old-releases.ubuntu.com
  2. Press CTRL+X to save your changes and confirm by pressing yes.
  3. Press enter to exit and type in: sudo apt update && sudo apt upgrade then reboot.
  4. After rebooting, open a terminal and type in sudo do-release-upgrade. Follow the prompts and reboot.

And, congratulations! You have sucessfully upgraded to Ubuntu MATE 23.10!

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@ricmarques thanks for updating the title!

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