We released RC1 of the Symfony CMF last week. Now it is time now to upgrade older installations to the latest and greatest. I decided to keep a record of what i had to do and write it down for others to follow the steps. There are notes in the CHANGELOG.md files of each CMF bundle, but a common blogpost is more convenient. The whole update took me a bit less than a day of work. Now that we are in release candidate state with the project, further upgrades should need no more changes, or only small ones.