I found one of my more recent posts on a similar issue with a link to the details of how to swap everything over after a radio reset: Lost all Zwave devices: Settings/Zwave Details shows NO devices...What to do? - #18 by jtp10181
Looks like that person had the same issue as you, radio was unresponsive and a soft reset and radio reset actually got the radio working again.
You can actually do it without using Swap Apps at all, just editing the DNI, but its a little more tedious. I think that method I detailed there is the most straightforward way to do it.
IF you have any child devices with rules/apps the childs cannot be swapped so you may have to move the rules over manually for those.
