This is the OLD ubiliux 3.0 release, for the most recent release please refer to the new ubilinux download page.
ubilinux™ 3.0 is an embedded Linux distribution from Emutex, based on Debian Jessie. It has been tailored specifically for the new UP board, providing drivers, libraries and applications to support the features of the UP board, such as the 40-pin I/O header or HDMI audio.
The ubilinux team provides a linux-upboard kernel flavour from the ubilinux/up Launchpad PPA. These kernels enable UP board features not yet directly supported by Ubuntu. Currently 4.4 kernel packages are available for the 14.04.x (Trusty Tahr) LTS release and for the 16.04.x (Xenial Xerus) LTS release.
You can find the information on how to install Ubuntu and the UP Board kernel packages from wiki: