My problem is that i want to install latest blender and upgrade it automatically via sudo apt-get update && sudo apt-get upgrade . So, i tried to add a repository

sudo add-apt-repository ppa:cheleb/blender-svn 

sudo apt-get update

sudo apt-get install blender

So, after the first line executed in terminal it gives me:

You are about to add the following PPA to your system:

 tag:launchpad.net:2008:redacted

 More info: https://launchpad.net/~cheleb/+archive/blender-svn

Press [ENTER] to continue or ctrl-c to cancel adding it



 Executing: gpg --ignore-time-conflict --no-options

 --no-default-keyring --secret-keyring /tmp/tmp.pvnVePB2Fl --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv tag:launchpad.net:2008:redacted

 gpg: "tag:launchpad.net:2008:redacted" not a key ID: skipping

And when i am running the second line it gives me:

W: Failed to fetch http://ppa.launchpad.net/cheleb/blender-svn/ubuntu/dists/precise/main/source/Sources  404  Not Found



W: Failed to fetch

http://ppa.launchpad.net/cheleb/blender-svn/ubuntu/dists/precise/main/binary-amd64/Packages

404  Not Found



W: Failed to fetch

 http://ppa.launchpad.net/cheleb/blender-svn/ubuntu/dists/precise/main/binary-i386/Packages

 404  Not Found



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

ones used instead.

Q: why this ppa does not work and what should i do to have blender updated automatically!?!Thanks