Thread: How to manually upload maps to protected internal memory of GPSmap 278 & some Streetpilots

Originally Posted by Doc_Koordinate

*** for unknown reasons the upload (I experienced this with data cards as well) may break down in various stages ('Communication Error') - no problem: start again at 7. - sooner or later the upload will be succesfully finished ***

Solution found: Breakdown while uploading maps (Message "Communication Error') can generally be avoided if unit is connected to power cable