I don't know what is the problem, but I've sharing opinions with owners of the KPA here and in spanish forums and this is what people think. As Armin said, I don't want to play the KPA with 1.6 firmware. I'm back to 1.5.4, waiting for an answer and, once we get that answer, I'll decide what I do but I can assure you that I'm not going to upgrade this 1.6 firmware or a similar sounding one.
+1