Quote Originally Posted by goldfinsh View Post
Catymag, the map I put is Canada Alaska 2012.30 and I am already using it on a 255 and already tested it on Garmin XT. I named it on both 255 and XT as gmapprom.img and gmasupp.img and it worked. But on the 255W, it fails. I found on other forums that Garmin must produce a .unl for it, but I need to register the device which I cannot because it is used and is already registered by the old owner and have no idesa what is the username and password. I added the map in the Garmin folder. Any thoughts?
Question 1: Do you have a receipt showing that this unit was purchased?


Question 2: Are you able to get a hold of the original owner?


If you can answer "yes" to either or both of these questions, then you should be able to get the unit registered in your name. In many cases Garmin will reset the registration if it can be shown that the unit was purchased. If you can get a hold of the original owner (the best option) you can get that person to deregister the unit in order to register it yourself. Otherwise you have to play around with Fast IMG Unlocker to get the maps unlocked so they will function on your unit, since you normally cannot transfer maps between units because of the unlock code requirement.