Done the upgrade from 6.1.1 to 6.1.3 and then from 6.1.3 to 6.1.4, no issues at all. This was done one 1 sub and 4 pubs. Make sure you get the image burned to DVD and test it out first, b/c i ran into the issue where it didnt recognize the media and i had to sftp the image onto the box. Although you could also do the CLI way here.
