There is not a single one on a1k that gave a negative report. I have a few more eMails from 3640 users who can now use the setup in Z3 mode.
What's so difficult in replacing a file on your harddisk and try it out? To me, it seems like all the "negative" reports (before software update) have now silently updated and don't complain any more. That's very common in product support: If the problem is solved, there is no more feedback, but if the problem persists, eMails continue. At this point, there is not a single open case from 040/060 users, so my guess is that the problem is solved for good.