I have updated initfs_flasher.tgz with changes for this FW. It is untested but I hope it will work. There are no changes in linuxrc script which is the only thing that matters for bootmenu.sh script. USB recovery mode is also included but you may always answer no if you don't want it :-)

Please let me know if it works. I will probably update when Nokia releases new kernel source as I don't want to lose my private changes.