I'm assuming that you have gained control of its IP address? (DHCP or Newly set static)...
The unit has a Web server page, go to a browser and type the IP address (you may have eluded to this in your post).
Have you tried using the USB connection with Toolbox? then use the PUF tool. I'm quite sure that the NSP doesn't support File Trx via FileZilla...
If you can connect with USB, you should probably step up the FW over a few versions, instead of jumping to the latest directly...
This is the latest FW:?CEN-NSP-1 [v1.002.0035, #00B915B6]
