@bratislav Right after the quoted post it is already clarified by pe1chl in which cases the update may be needed. http://forum.mikrotik.com/t/problems-getting-mikrotik-to-work-with-dsl/442/1
@HoracioDos “And you see the warning stating that you must install this package” qualifies as “you need it”. All other cases: you do not need it apparently.