Please note. Ubuntu 20.04 OS image is not available for Z83-4 U V2 64G (Version 2)
Ubuntu 21.04 OS image download link work for me. Some browsers will block downloads. You may need to save the link as.
Try the link below:
https://mega.nz/file/e2pn2KDI#hH-GjUMk5YEpjOoKBNVVhFPPr8Ie1YX9sqP5URAc534
NEO Z83-4U V2 64G installation instructions can be found here:
mega.nz
I have tried it with apt-get update:
root@minix-mini-pc:~# apt-get update
Hit:1
http://archive.canonical.com/ubuntu hirsute InRelease
Get:2
http://la-mirrors.evowise.com/ubuntu hirsute InRelease [175 kB]
Get:3
http://la-mirrors.evowise.com/ubuntu hirsute-updates InRelease [175 kB]
Get:4
http://la-mirrors.evowise.com/ubuntu hirsute-backports InRelease [175 kB]
Get:5
http://la-mirrors.evowise.com/ubuntu hirsute-security InRelease [175 kB]
Get:6
http://la-mirrors.evowise.com/ubuntu hirsute-proposed InRelease [175 kB]
Err:2
http://la-mirrors.evowise.com/ubuntu hirsute InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:3
http://la-mirrors.evowise.com/ubuntu hirsute-updates InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:4
http://la-mirrors.evowise.com/ubuntu hirsute-backports InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:5
http://la-mirrors.evowise.com/ubuntu hirsute-security InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Err:6
http://la-mirrors.evowise.com/ubuntu hirsute-proposed InRelease
Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
Reading package lists... Done
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository '
http://la-mirrors.evowise.com/ubuntu hirsute InRelease' is not signed.
E: Failed to fetch
http://la-mirrors.evowise.com/ubuntu/dists/hirsute/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository '
http://la-mirrors.evowise.com/ubuntu hirsute-updates InRelease' is not signed.
E: Failed to fetch
http://la-mirrors.evowise.com/ubuntu/dists/hirsute-updates/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
N: See apt-secure(8) manpage for repository creation and user configuration details.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
E: The repository '
http://la-mirrors.evowise.com/ubuntu hirsute-backports InRelease' is not signed.
E: Failed to fetch
http://la-mirrors.evowise.com/ubuntu/dists/hirsute-backports/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
E: Failed to fetch
http://la-mirrors.evowise.com/ubuntu/dists/hirsute-security/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
E: The repository '
http://la-mirrors.evowise.com/ubuntu hirsute-security InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch
http://la-mirrors.evowise.com/ubuntu/dists/hirsute-proposed/InRelease Clearsigned file isn't valid, got 'NOSPLIT' (does the network require authentication?)
E: The repository '
http://la-mirrors.evowise.com/ubuntu hirsute-proposed InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
root@minix-mini-pc:~#