How do I upgrade to the unreleased version of Ubuntu for testing?
Press Alt + F2 and type
update-manager -d. On the top of the window you will see an info of the new Ubuntu+1 "release".
However, upgrading to a development release is not recommended, as it is a unstable release.
See this question for tips when you have problems: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do?
The truly command line way is (e.g. if you don't have a gui):
sudo do-release-upgrade -d
-d means update to a development version
Upgrade the operating system to the latest release from the command-line. This is the preferred command if the machine has no graphic environment or if the machine is to be upgraded over a remote connection.
-h, --help show help message and exit -d, --devel-release Check if upgrading to the latest devel release is possible
There are two ways to upgrade:
- Upgrade using update-manager
- Upgrade using alternate cd
However note it is not recommended to upgrade it to Ubuntu+1, since it is not stable.
Upgrade using update-manager:
Press Alt+F2 and then type
update-manager -d. When update manager appears then click on upgrade.
Upgrade using alternate cd:
You can also upgrade using the alternate cd. After downloading the latest build then press Alt+F2 and enter
Because it is a development release, you will almost certainly have problems. See: There's an issue with an Alpha Release of Ubuntu, what should I do?
From 11.04 onwards,when you boot the LiveCD and start installing there will be an option to upgrade.
It will automatically detect installed Apps and install the updated version of your Apps.
you can always download the upcoming Ubuntu release ISO file at
The link is perpetual ... its always pointing to the follow-on release
After you download the ISO file then burn onto a USB using unetbootin at https://unetbootin.github.io/ and boot off this USB stick (or burn ISO onto a DVD)
instructions on how to burn ISO file onto USB memory stick :
sudo add-apt-repository ppa:gezakovacs/ppa sudo apt-get update sudo apt-get install unetbootin
plug in your USB memory stick - formatted for FAT
sudo unetbootin # then choose ISO and pick local ISO file
now pick Diskimage (not Distribution) and pull up the ISO file you just downloaded
To boot up from this USB stick may require you to hit ESC key on a reboot to get into your BIOS settings to have it boot from the USB instead of normal SSD/harddrive
Once booted launch the Upgrade application which gives you options like install new OS along side existing OS
Alternatively to perform an upgrade in place issue these after you backup critical documents
sudo apt-get update sudo apt-get dist-upgrade sudo apt install update-manager-core;
then make this edit
vi /etc/update-manager/release-upgrades # Prompt=normal Prompt=lts # <-- to go from current LTS to next one ... say 16.04 to 18.04 sudo do-release-upgrade -d