Be careful guys when you changing the housing. I have changed mine on my black N9 with a blue one, I have wachted the LESSON5 topic on Youtube to help me BUT when I finished to replace it and try it, the CAMERA didn't work, i have an error message, even the flash won't work, it freeze the phone. So I have flashed it many time, even TOTALLY flashed to really zero, it doesn't work..Btw the jack headphone dosn't work fine too, only one way works (the left or the right, i don't remember) and when I would't to change it by the one on my black housing, I have broken the back of the blue housing.

So if I can give you a tip : don't change the housing if it's not important, you can broke your pretty easily.