I need also update the N900 but still bit unsure... There seems to be two firmware releases 42-11 and 51-1 (not the 41-1) in http://tablets-dev.nokia.com/nokia_N900.php. Should I then instal the 42-11 first before the 51-1 when updating the firmware? Or has the 51-1 already 42-11 included as the name combined in file name may suggest.