If you're interested in the pairing process, some of us have reversed it at, for exemple my port of the python version in java:
https://github.com/xpierrohk/Digital...erCommand.java
It is a bit mind-blowing (but it's a standard Diffie Hellman I suppose). Guys like us on linux have to re-code it ourselves, no help from Sony
Dunno if my tool work on windows, but if you're desperate you can help debug it there :s
Or that one should work:
https://github.com/janten/dpt-rp1-py
The official app has this little annoyance that it tries a zeroconf by default, meaning it waits for a multicast packet on the network, which doesn't always work. Since the new firmware last week we can now setup the wifi directly from the reader, that should help a lot, since it's much easier on simple wifi zeroconf, than the USB thing, for which I actually have no idea how it works.