Hi Gilles,
I could reply you in Italian, Spanish, Portuguese and even in German, but unfortunatly not in French
And this is a english only forum, so let's go back to that.
Google Translator tells me that you have problems with the Raspberry Pi model B+. I personally tested the latest and I can say that it works without any problems on the model B+. Of course it does not include the latest kernel patch for I2S, but for everything else it works fine.
What kind of problems did you experience?