Thanks for this information... It does work!!! My wife had to phyisically watch me do it and I found that I was not following your instructions perfectly... I would like to make a change to your 1st instruction...
you wrote:

1. Press I/O while pressing RM Setup. The RM Setup button flashes and the shift button indicator lights up.

It would be better to say:

1. Hold down the RM Setup key first then press The I/O key. The RM Setup button flashes and the shift button indicator lights up.

It made the difference for me!