Understand your concern regarding updating as although very efficient the Becker 7934 does seem rather teutonic . Found necessary software via
http://forum.pocketnavigation.de/
which tests my schoolboy german to the extreme . Apparently this unit is very popular in Germany according to their sites , my own 1000 mile road test last week found it more responsive than the Garmin maybe due to its chipset and processor speed .
Admitting enthusiasm to tinker helped me choose this unit which is said to work well with the more popular Tele Atlas maps available via Mio . Not hacked into it yet as both my beloved and I are busy testing its door-to-door reliability and enjoying its MP3/WMA player , will probably attempt this after the 28 day return period has expired .
Shortcomings ? Clumsy postcode entry and limited street index on the DVD provided , otherwise no problems . Great value for money , can only recommend keen surfing as this unit was on sale in Germany for 99 euros recently .