This is not a request, but do you think in theory it would be possible to have the DR shutdown by holding the lower middle button for a few seconds (the same way you start it)?
I've looked at the ION Development PDF and it says there's no keyboard mapping associated with this action (holding the lower middle button for a few seconds), which seems like a bad sign.
Also don't know if UDS could get in the way.
Thanks in advance for any ideas.