Ultimate Edition 5.1 is the flagship edition of this GNU/Linux distribution, on which the rest of the official flavors are based, and it was built upon Canonical’s long-term supported Ubuntu 16.04 LTS (Xenial Xerus) operating system, thus shipping with the Linux 4.4 LTS kernel and all of its internals. The GNU/Linux distribution has been created using Tmosb (TheeMahn’s Operating System Builder) 1.9.7, which anyone can use to create his or her own Ubuntu-based flavor, and, being based on Ubuntu 16.04 LTS, it is supported with security fixes and updated packages for two years, until 2019.