Errors while installing virtualbox 5.1 on kali Linux

[Cathy]

CAN SOMEONE PLEASE HELP ME OUT?
I followed these steps
(1) sudo apt-get remove virtualbox-4* (NOTE: sudo apt-get remove virtualbox-1* was removed in my case)

(2) sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian $(lsb_release -cs) contrib" >> /etc/apt/sources.list.d/virtualbox.list'

(3) sudo apt-get install dkms

(4) sudo apt-get update

(5) wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -

(6) sudo apt-get update

(7) sudo apt-get install virtualbox 5.1

I got these errors

DURING SUDO APT-GET UPDATE, I got:

........... Done
W: The repository 'http://download.virtualbox.org/virtualbox/debian kali-rolling Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://download.virtualbox.org/virtu...amd64/Packages 404 Not Found [IP: 104.96.90.210 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.

DURING SUDO APT-GET INSTALL APTITUDE, I got:

E: Could not open lock file /var/lib/dpkg/lock - open (21: Is a directory)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?



I have also migrated to 4.9.0-kali3-arm64

PLEASE I WILL MUCH APPRECIATE STEP BY STEP SOLUTION.

[_defalt]

Can you show the output of cat /etc/apt/sources.list?

[Mister_X]

One thing, you forgot a crucial step: getting the virtualbox repo signing stuff.

Anyway, you shouldn't add external repos to Kali. The kernel is not the same as Debian.

[Cathy]

sources.jpg

@_defalt, Thanks for your comment, i have attached the sources.list file (Note: I uploaded it in jpg file but the original i'm having here is sources.list). On clicking the attach, you will view it.

[Cathy]

@Mister_X, Thanks for the comment but then, what should I do to correct it?

Remember, the terminal got me stocked at:

DURING SUDO APT-GET INSTALL APTITUDE, I got:

E: Could not open lock file /var/lib/dpkg/lock - open (21: Is a directory)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?