Well, er, thanks a lot!
Actually I thought it was not sufficiently clean, but compact it is for sure - Python is a very good language for short and quick tools.
If you use it as python dfu.py <file.dfu>, the script already decodes the dfu file only; to dump the contained images, you need to add -d.
In the attached version I’ve added an option for setting the USB id from the command line - the DSO nano is the only ST thingie I have, so I had not thought someone would need it - thanks for asking.
Also, I’ve added a license line: for me LGPL3 is perfectly fine. Of course, if you’d like to put it under git you are more than welcome!
Thanks for your gcc work, btw - I’m trying to follow, but git is not yet a beast I’ve tamed 
Antonio
dfu-20101118.tgz (47.4 KB)