Install Ulyxex : upload all files on your web site and then go to
the root url and load index.php like http://example.org/index.php
then follow intructions.
Update Ulyxex : transfert all files and load update.php.
Example : if your ulyxex website is http://example.org/ load http://example.org/update.php
Or clone source code from git depot: git clone https://bitbucket.org/andresloz/ulyxex.git
from https://bitbucket.org/andresloz/ulyxex/src/master/