Well, still, I have flashed both rootfs and eMMC, have used both those reset to "factory settings" and "clear memory" in the phone's setup application, and still when the phone boots up, it asks my security code which is not 12345, but is correctly that what I changed it to be 3 months ago.

So is this abnormal behaviour, or is all N900s this (good) secure that security lock stays even after all those reset-tasks?