It won't be able to use unlocked maps if it has [Only registered and activated users can see links. ]. To check HWID, press and hold battery symbol for ~6 sec to see a hidden menu and press 'next' until you see the 'Version Information' page > Start Test > More. In the second field of the top 3 entries you'll see Bxxxx-00. xxxx is your unit's HWID. Or look in the unit's Garmin folder at GarminDevice.xml for a similar entry near the start.