mobile

I've been following this Mofo exploit thing; it allows you to write a new system image that may be altered. On the Turbo. My question is, would this be of possible use on (finally) getting the Ultra (vers. 4.4.4) rooted? Could you downgrade to an exploitable version, say 4.4 or even 4.2.2? Has anyone played with this? I see no recent postings suggesting this has been attempted, I see no real recent activity for the Ultra. I figured someone should post this question and see if this sparks something.