I have a TeXLive 2009 installation on my Linux machine. And, I'd like to upgrade it to TeXLive 2010. I tried the command
sudo tlmgr update --self --all as suggested in How to keep my TeX Live installation up to date?. But, I get the following error message.
tlmgr: package repository http://.../mirrors/ctan.org/systems/texlive/tlnet
The release version of the installation source and the installation media do not agree: source: 2010, media: 2009
Please fix your location http://.../mirrors/ctan.org/systems/texlive/tlnet at /usr/local/bin/tlmgr line 4205.
This error message makes me wonder if it's possible at all to upgrade from TeXLive 2009 to 2010 automatically by pointing my repository location to the right address.