Ubuntu Advantage:
==================
This allows you to get lts versions suported up to a decade after launch (rather then five years) for security updates.
You can have up to 3 devices free, can cost signifacant money afterward for enterprise (more PCs).

View your actavations at: https://ubuntu.com/advantage

*Note: It only suports x86 (32bit + 64bit) and ARM (64bit) only. no PowerPC suport, so I cant use my Wii U Linux to have more updates unfortantly. I alleady tried as well and gives error when enabling service.

# Install the latest UA client
sudo apt update
sudo apt install ubuntu-advantage-tools

# Use the client to attach this machine to your contract using your UA token
sudo ua attach <token>

# Ensure ESM-infra is enabled as well:
sudo ua enable esm-infra
sudo apt update
sudo apt upgrade

#To remove licence from device (and let it be avable again):
sudo ua detach

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Sources:
https://ubuntu.com/blog/ubuntu-16-04-lts-transitions-to-extended-security-maintenance-esm
https://ubuntu.com/security/esm

Date: October 30th, 2021