Upgrade Special - access unreleased builds
If you want to get access to the unreleased builds - and believe me you do - the latest is always wildly beyond what the last official release is.
This is the process for doing one of these upgrades. After you have done it you won’t need to do this again unless we are trying to get you to use a particular build.
After that you should be upgraded to the snapshot release. For snapshot upgrades to work you will need to have these ports open in your network configuration.