Thank-you assume it would be the same for whichever new unit I decide on, the Montanna or 62s, and I'm not sure what you mean by "unlocked to the eTrex" - I purchased the Garmin Mapsource Cdn topo maps product on a CD some yrs ago and simply loaded them to the sdcard, regrettably I have since lost the original cd in a recent house move but did formally register both the Legend unit and cd on-line with Garmin.