I recently flashed one of my N900 with the combined image I downloaded here:
http://gsmphonetricks.blogspot.de/20...212011381.html

It's just my testing device so I can't say much more than "it works". I can provide the sha1sum in the evening (GMT).
For some reason I had to download the file like five times though because it always ended prematurely. No error, no stall, it was just not transmitted completely. I usually don't have these problems with my ISP.