How to update to 15.10 16.04?

Trying updated with 16.04 to 15.10
`do-release-upgrade gives
Checking for a new Ubuntu release
No new release found
`update-manager` also yields no results with the message
The software on this computer is up to date
`apt-get update` did
July 12th 19 at 16:52
5 answers
July 12th 19 at 16:54
You need to boot from disk or USB flash drive with Ubuntu 16, and they choose system update.
It is not Windows and boot from the stick there is no need. - Billy_Davis commented on July 12th 19 at 16:57
July 12th 19 at 16:56
Forced method, tested on itself, when such ways as written in your question worked:
sudo sed -i 's/wily/xenial/g' /etc/apt/sources.list
sudo apt-get update
sudo apt-get dist-upgrade
Finally! Helped the first place. Already that only did not do: and the version of Python changed the lsb_release file, and the module itself, that error in it was written when you upgrade. - Billy_Davis commented on July 12th 19 at 16:59
July 12th 19 at 16:58
sudo apt-get update && sudo apt-get dist-upgrade
sudo reboot
sudo update-manager -d
apt-get gives: 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
update-manager: The software on this computer is up to date - Billy_Davis commented on July 12th 19 at 17:01
July 12th 19 at 17:00
I already 15.10 is - Billy_Davis commented on July 12th 19 at 17:03
You read first what was written. Think and answer - Orlo.Emmeri commented on July 12th 19 at 17:06
there, the man writes what comes the penultimate update, and the latter not. I do not have any - glennie_Ritchie commented on July 12th 19 at 17:09
: Have you tried sudo do-release-upgrade-d or not? There Argil cool guy who fumbles. He wrote to you the answer - glennie_Ritchie commented on July 12th 19 at 17:12
: of course. Canonical has already decided that the system is stable for all users a message about the new version. - Destiny86 commented on July 12th 19 at 17:15
July 12th 19 at 17:02
Or wait, when canonical decides that the system is stabilized for user updates, or

sudo do-release-upgrade-d

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