That was extremely helpful.
After trying to convert from CN to WW firmware by flashing recovery, boot and fastboot, the phone became borderline functional. I used your procedure to recover to an image i thought was a match for the flashed partitions, and that brought the phone to a "booting, but completely non-functional" state. I repeated the process once more, with the latest WW image, and the phone came back to life in all its glory.
Thanks a lot for posting this
P.S. i changed the name of the file on the SD root to
MOFD_SDUPDATE.zip, and that worked very well.