You might try this link:
lwfinger is going to need some information from you that is listed in the first post. However the there is a character missing in his command so you will need to provide the following information:
lwfinger has /sys/device where it should be /sys/devices.Code:SPROM=$(find /sys/devices -name ssb_sprom) sudo cat $SPROM > sprom.dat
Hopefully that will fix the problem.