am335x boneblack 4dcape43t for wheezy-armhf/v3.18.0-rc7-bone1 ?

Hello all ! This morning I upgraded the kernel to wheezy-armhf/v3.18.0-rc7-bone1 and 4dcape stops working. I don’t have /boot/uEnv.txt else /boot/uboot/uEnv.txt, and I add (at the end and at start of the file) the line dtb=am335x-boneblack-4dcape-43t.dtb but the screen doesn’t show anything…

Anyone knows what I am doing wrong ?