Download and Install Debian Unstable i386/amd64
Actually There’s No Way for Downloading and Installing Directly the Latest Debian Unstable GNU/Linux Release.
For Installing the Debian Unstable Release you have Actually Two Choices:
- Uprgrading from Debian Stable
- Uprgrading from Debian Testing
Here you will Find Clearly Resumed Just Only the Keys/Essentials Steps to Upgrading from Debian Stable because then to Upgrade from Testing Involve just Only the Second Step.

Upgrading to Debian Testing from Debian Stable.
Editing sources.list Apt Config File.
su
If Got “User is Not in Sudoers file” then see: How to Enable sudo
nano /etc/apt/sources.list
Replace each instance of “wheezy”/”stable” with “testing”!.
Ctrl+x to Save & Exit from nano.
Upgrading Distro/Packages to Testing.
apt-get update
apt-get -u dist-upgrade -
Upgrading to Debian Unstable from Debian Testing.
Editing sources.list Apt Config File.
su
If Got “User is Not in Sudoers file” then see: How to Enable sudo
nano /etc/apt/sources.list
Replace each instance of “testing” with “unstable” on File!.
But Comment Out the Entries Containing the “updates” keyword.
Ctrl+x to Save & Exit from nano.
Upgrading Distro/Packages to Unstable.
apt-get update
apt-get -u dist-upgrade -
How to Install Google-Chrome Web Browser on Debian Linux.
How to Install the Latest Firefox on Debian Linux:
How to Install the Latest Thunderbird on Debian Linux.