i ran gmaptool and its fid=2043 and pid=1
o cid==sorry i read to quickly
sd serial number is from 4 to 10 decimal digits
gps unit id # is always 10 decimal digits
not all gps's will give you a sd serial number----
you can use either the gps unit id number or sd serial number on the top of keygen v1.5
to create your 25 digit unlock code---
if you use a sd serial number it will be unlocked anywhere you place the sd card.
if you use the gps unit id number it will be unlocked only in that gps.
there are utilities that will give you an sd serial number----but they decode it different then a garmin does and will not unlock map.