Sorry if I'm pain, but the Badajoz, Espana was solved easily: I just removed this map from 2010.30 and add the map of Badajoz, Espana from 2010.20 . The only question remains, how to install the lane assist for Europe in N.American nuvi 1490t. Also the img file sent to the SD card by Mapsource is 1,853,792 mb while the img file you posted is 1,878,016
Does it mean I lost some information using Mapsource? How it could happen?