Re: Garmin 1490 fails to show roads/streets but gives audible directions after update
I'm no expert, but have a 1490 for 4 years.
The map on your SD Cart should be named "Garmin". Copy your gmapsupp.img in there.
In the map "Garmin" make another map called "POI"; copy your speedcams.gpi in there. (use Poiloader)
Make another map in the map "Garmin" called "JCV" and copy your JCV file in there. That's it.
No gma, unl files are required on your SD cart, as far as i know, and the method above always worked for me!
Oh yeah, be sure to choose this new map on your device!!
Hope this helps.