Unable to "sudo apt-get update" without errors

[JohnQPublic]

Err:9 http://armbian.systemonachip.net/apt xenial/utils armhf Packages
  404  Not Found
Reading package lists... Done
W: The repository 'http://apt.armbian.com xenial Release' does not have a Releas                                        e file.

I am getting above errors when trying to update.
 

I have OrangePi One with "16.04.7 LTS (Xenial Xerus)" and "Armbian Linux 3.4.113-sun8i"

[Werner]

Moved to Common issues / peer to peer technical support

 

Your system is WAY outdated. Support for stoneage 3.4.y has been dropped almost two years ago. Also Xenial is no longer supported.

[JohnQPublic]

18 hours ago, Werner said:

Moved to Common issues / peer to peer technical support

 

Your system is WAY outdated. Support for stoneage 3.4.y has been dropped almost two years ago. Also Xenial is no longer supported.

What should I update to? I would like to keep as much of the settings if possible.

[Werner]

There is no procedure to update either the firmware package from this state to an up-to-date version neither the userspace. If you want to upgrade you have to start over.