To sum it up, you need to specify the Harmattan/Nitdroid kernel locations like this in your ubiboot.conf: "/boot/Harmattan/boot/zImage-2.6.32.54-dfl61-20121301" "/boot/Harmattan/boot/zImage.nit" Then, it will load the kernels from your "mmcblk0p2:/boot/", the location that appears as "/boot/" on your Harmattan installation.