Apparently, when I add POIs to /var/mobile/Applications/(many digits and numbers)/garmin-nav.app/storage-usa/POI, everything is working fine, need to zoom on map into oblivion to see small, really small icons, but never the less it is all there.
Had to restart, not only the aplication but the Iphone as well.
Can search for POI as well (different search GUI on Garmin Street Pilot On Board WE 2.0 and US 2.2)
Still can not figure out how to see Speed cameras as icons on map.
Thank you all