(Sorry if it seemed to be fighting. I wasn't intending to; I was intending to be a little sarcastic though. With a smiley ) Can't help with that as my N900 is stuck behind the queue of incompetence and cancellations. For the extreme wipe, follow the instructions to flash both the firmware image and the eMMC image on this thread: http://talk.maemo.org/showthread.php?t=34988 As far as I can tell, that should cover everything. I don't know if it's risky, or if you have to do them in a particular order, or even if it works. Best check elsewhere before doing it, and use that thread a starting point to the elsewhere.