It is true, that works. But I cannot implement this remotely, and I'm not going to drive 50 miles to press a couple of buttons. Why is the software solution no longer available?
As an aside, I have tried installing the software from the USB drive presented when attaching the printer about 5 or 6 times (different computer, different printer each time... all were m401n or m401dn). Each time, it freezes during the install. This is a feature which sounds good on paper, but really needs the kinks worked out.