I could not find in the OP information whether the map was locked or unlocked. The map could be legally purchased and locked to either the SD card or the device. Therefore I thought I'd ask.

It is my interpretation that the eTrex Touch 25 has weak protection, as for instance also in GPSmap 64. This means unlocked NT map will be (or should be...) recognized. Unlocked NTU map will not be recognized. Another reason I asked about the map being locked or unlocked.