Not that easy with me. I first tried to install it straight with warehouse. Not possible. Read again the resurrect N9 thread. Aa, I have to first download it on a pc, then move it to phone and then do this aegis-dpkg thing. So I did that, but no sudo. So I have to enable root access by installing N9 QTweak. So I installed that and opened is and it was all black and a green text root password:

So what did I do? I wrote there rootme and hit enter. Then it started to do something and then it stopped and I couldn't anymore install things. So I am back with my reflashed N900 which I have now got configured and have camera working again but this device now constantly looses the connection to sim and network.