I seem to recall that my N9 had every language turn by turn voice file on it standard
Nokia Suite supported N9 & maps from the 3.5.betas onwards as far as i know... in any case, i use 3.6.11 to manage maps & voice files, connected via Bluetooth normally.
go to /home/user/MyDocs/cities and delete everything.
when maps "online" it downloading map data from web.