To get the full os contents is quite a feat as it would require some kind of investigation tool to actually "grab" the os in entirety. Still would not give you all the closed driver info as this would require investigating each closed device itself to even try to get it to spill its contents out so even armed with the each and every closed device data sheet it still requires some technology to get its contents. As for the general os i think this may be possible with something like an investigation tool for linux and an unhibited way into the os hmmm food for thought aye. As for flashsing the os from an sd card in the N900 ha good luck lol cos i think impossible.