Sorry to blow your candle out but if something did go wrong with my N900 i can assure you i would no way need help in any way or form from this community thankyou lol i think somehow i am capable of sorting out my own device thanks.
Have you any idea just how many of us engineers have actually done this upgrade? now i would think is standard practise for ANY engineer to check for malware etc etc before even using the file lol.