Unpacking the 1.00.04c firmware:

 8b6ebf0c8bcef7f17ea4be4bbab477fb  WRP400_v1.00.04.c_ETSI.bin

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=cybertan_half_bin.img bs=1 skip=512 count=1647932

 ae50b5a4612bfb52f1cc86e9679fd74c  cybertan_half_bin.img

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=half-kernel.bin bs=1 skip=588 count=873712

 ad3e1dfb76deb47834174a20e8b20bf8  half-kernel.bin

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=half-rootfs.bin bs=1 skip=874300 count=774144

 66ecc9e6dccff34795fc93cc012a1933  half-rootfs.bin

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=cybertan_rom_bin.img bs=1 skip=1648572 count=3918168

 6fb0a2641f794cb04449af85a7cab582  cybertan_rom_bin.img

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=full-kernel.bin bs=1 skip=1648648 count=1005836

 86de2012face1512b779517decc14125  full-kernel.bin

 dd if=./WRP400_v1.00.04.c_ETSI.bin of=full-rootfs.bin bs=1 skip=2654484 count=2912256

 661f4f3940c342f05a695ce70fd6150b  full-rootfs.bin

Unpacking the 1.00.06 firmware:

 b88f9e3596cb5fcf3c7bcfa8450adfb2  WRP400_v1.00.06_fw.bin

 dd if=./WRP400_v1.00.06_fw.bin of=cybertan_half_bin.img bs=1 skip=512 count=1648164

 2889db231884d7da883a1e5e42288cc2  cybertan_half_bin.img

 dd if=./WRP400_v1.00.06_fw.bin of=half-kernel.bin bs=1 skip=588 count=873816

 5e9f4f4b4ff543481bab00d73bac4040  half-kernel.bin

 dd if=./WRP400_v1.00.06_fw.bin of=half-rootfs.bin bs=1 skip=874404 count=774268

 6cc24978ba2fcd98a07b763101afe680  half-rootfs.bin

 dd if=./WRP400_v1.00.06_fw.bin of=cybertan_rom_bin.img bs=1 skip=1648676 count=3956656

 3818282bb9b118d1385c3f00363a77b7  cybertan_rom_bin.img

 dd if=./WRP400_v1.00.06_fw.bin of=full-kernel.bin bs=1 skip=1648752 count=1015652

 5ee342de9861d7af11ee75cad7c8ac57  full-kernel.bin

 dd if=./WRP400_v1.00.06_fw.bin of=full-rootfs.bin bs=1 skip=2664404 count=2940928

 3d5dc132f0c4ad1f3d26fe44b70fd7c3  full-rootfs.bin