From http://opensourcehacker.com/2013/03/20/how-to-backport-packages-on-ubuntu-linux/backportpackage willdownload the latest version of the package from Ubuntu archives. The latest version must exist in the some newer Ubuntu releases   backporting process does not consider upstream releasesattempts to build ituploads the resulting .deb to your personal PPA archive on launchpad.netWhy is that backporting process does not consider upstream releases? What is the advantage of backporting considering downstream release instead of upstream ones?By upstream releases, does it mean the raw (not for a particular Ubuntu release) source code release from the original author of the package, available from the package's website maintained by the original author?To do backporting, is it necessary to create an account on launchpad.net and create a PGP key, as said in the link?
Why backporting process does not consider upstream releases?
ubuntu;apt;backports