I might presume that your Nook is the problem if other devices can connect with out issues.
If you turn off all Wifi security on the 655 temporarily, does the Nook connect then? Turn back on after testing.
There is more recent FW out there, v1.37 if you wish to give that a try. If you do, please follow this:
FW Update ProcessIf this fails to resolve your issue, I presume there is a problem with the Nook.