@Misiak
Thanks I will try. (I was using a linux at PC, so i had to do with terminal and some commends). I am not sure about new sources, but I will try.
Break? Definitely? I dont care for any data. Just want to bring back power over OS on my N900 (need to install email, web browser, portrait switch, vlc, pdf reader).
May I ask u to contact with You via email? If U agree please send me a meesage (just add to my nickname @gmail.com)
I will follow Your instructions.