We've been having the same problem. We set our IP address to 10.31.75.5, our gateway to 255.255.255.0, connect the cRIO, open the Imaging Tool, and see this:
(The Current Image is unknown because we've failed formatting several times now. I assume we can't see the Modules Installed for the same reason.)
And when we click Apply:
And it
never stops. We've waited at
Rebooting Compact RIO device... for at least 20 minutes at a time, and nothing.
At least you're not alone with this problem.
As for rebooting the cRIO, we've tried this several times after several power switches and reboots, and we're stuck.
The interesting thing is that the Imaging Tool seems to stop completely at
Rebooting: if we power off the cRIO or disconnect the Ethernet cable, the tool doesn't respond. I wonder whether this is helpful information for anyone.