What Repository to use for Ubuntu 17.04 ? [Solved]

Hello

I've just unpacked my new GPD Pocket with Ubuntu (Zesty Zapus)

But I can not install Software:

Code:

$ sudo apt-get update

Errors.

Code:

$ sudo apt-get dist-upgrade

More errors.

Code:

$ sudo apt-get install openssh-server
[sudo] password:
Reading package lists... Done
Building dependency tree      
Reading state information... Done
The following package was automatically installed and is no longer required:
 linux-signed-image-generic
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
 ncurses-term openssh-sftp-server ssh-import-id
Suggested packages:
 molly-guard monkeysphere rssh ssh-askpass
The following NEW packages will be installed:
 ncurses-term openssh-server openssh-sftp-server ssh-import-id
0 upgraded, 4 newly installed, 0 to remove and 249 not upgraded.
Need to get 384 kB/627 kB of archives.
After this operation, 5.144 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 http://archive.ubuntu.com/ubuntu zesty/main amd64 openssh-sftp-server amd64 1:7.4p1-10
 404  Not Found [IP: 91.189.88.162 80]
Err:2 http://archive.ubuntu.com/ubuntu zesty/main amd64 openssh-server amd64 1:7.4p1-10
 404  Not Found [IP: 91.189.88.162 80]
Err:3 http://archive.ubuntu.com/ubuntu zesty/main amd64 ssh-import-id all 5.6-0ubuntu1
 404  Not Found [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-sftp-server_7.4p1-10_amd64.deb  404  Not Found [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/o/openssh/openssh-server_7.4p1-10_amd64.deb  404  Not Found [IP: 91.189.88.162 80]
E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/s/ssh-import-id/ssh-import-id_5.6-0ubuntu1_all.deb  404  Not Found [IP: 91.189.88.162 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
$


Where is it
or what should be written into /etc/apt/sources.list ?

Thanks.

Well, I gave up... I tried to install manually, but 17.04 "Zesty" seems been removed from all Mirrors with the needed versions of the Programms. Before I replace glibc    I downloaded the "already respinned Ubuntu ISO" Image
"gpdpocket-20180212-ubuntu-17.10.1-desktop-amd64.iso"
referred on
https://github.com/stockmind/gpd-pocket-ubuntu-respin
and made a fresh installation. It works now fine :-)

Thanks for reading.

That's Great!