Paili Radicalz38,
I still run power kernel 45. It has u-boot working fine (although with some older u-boot version:U-Boot 2010.06-00697-g61ab171-dirty (Oct 29 2010 - 04:14:37)). But If I escape the boot sequence in this u-boot I can type a few commands and then the device shuts down.
(I is not a matter of what commands I use. even without commands it shuts down after 10 seconds or so). This is not enough time to enter all the commands to specify a kernel on the sdcard manually :-(

From the kernel-power debian rules I notice that a kernel image is also run through the fiasco-gen command. Has that been done with the image.bin files you supplied Pali? maybe this is the reason for Radicalz38 reboot loop?