Hi Everyone,
I apologize if this subject was already discussed.
I am simply new to this and I am stuck here and I don't know what to do.

My configuration is the following:
- Nexus 7 2012
- Anroid 5.1.1
- Nethunter 3.15(release-keys)
- Linux Kali 3.1.10-Bricked-v0.591-g0a2e5f6 #2 SWP

My problems are:
PROBLEM 1)
I CANNOT INSTALL ANYTHING !!!
ALWAYS i have this message at the end:
E: Failed to fetch http://http.kali.org/ .... 404 Not Found

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?.

Even when I want to update I have the following message:

root@kali:~# apt-get update
Ign http://http.kali.org sana InRelease
Ign http://security.kali.org sana/updates InRelease
Ign http://http.kali.org sana Release.gpg
Ign http://security.kali.org sana/updates Release.gpg
Ign http://http.kali.org sana Release
Ign http://security.kali.org sana/updates Release
Ign http://http.kali.org sana/main armhf Packages/DiffIndex
Ign http://security.kali.org sana/updates/main armhf Packages/DiffIndex
Ign http://http.kali.org sana/non-free armhf Packages/DiffIndex
Ign http://security.kali.org sana/updates/contrib armhf Packages/DiffIndex
Ign http://http.kali.org sana/contrib armhf Packages/DiffIndex
Ign http://security.kali.org sana/updates/non-free armhf Packages/DiffIndex
Ign http://security.kali.org sana/updates/contrib Translation-en
Ign http://http.kali.org sana/contrib Translation-en
Ign http://security.kali.org sana/updates/main Translation-en
Ign http://http.kali.org sana/main Translation-en
Ign http://security.kali.org sana/updates/non-free Translation-en
Ign http://http.kali.org sana/non-free Translation-en
Err http://security.kali.org sana/updates/main armhf Packages
404 Not Found
Err http://http.kali.org sana/main armhf Packages
404 Not Found
Err http://security.kali.org sana/updates/contrib armhf Packages
404 Not Found
Err http://http.kali.org sana/non-free armhf Packages
404 Not Found
Err http://http.kali.org sana/contrib armhf Packages
404 Not Found
Err http://security.kali.org sana/updates/non-free armhf Packages
404 Not Found
W: Failed to fetch http://http.kali.org/kali/dists/sana...armhf/Packages 404 Not Found

W: Failed to fetch http://security.kali.org/dists/sana/...armhf/Packages 404 Not Found

W: Failed to fetch http://http.kali.org/kali/dists/sana...armhf/Packages 404 Not Found

W: Failed to fetch http://security.kali.org/dists/sana/...armhf/Packages 404 Not Found

W: Failed to fetch http://http.kali.org/kali/dists/sana...armhf/Packages 404 Not Found

W: Failed to fetch http://security.kali.org/dists/sana/...armhf/Packages 404 Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

PROBLEM 2)
I want to start Wireshark (IT NEVER OPENS) and I get this message:

Last login: Thu Mar 30 16:04:05 UTC 2017 on pts/2
Linux kali 3.1.10-Bricked-v0.591-g0a2e5f6 #2 SMP PREEMPT Tue Oct 27 23:53:13 UTC 2015 armv7l

The programs included with the Kali GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Kali GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
root@kali:~# wireshark
Unable to init server: Could not connect: Connection refused

(wireshark:7683): Gtk-WARNING **: cannot open display:
Unable to init server: Could not connect: Connection refused

Any help is highly appreciated.
Thank you.