Enabling location service

Hi, My image made with instaDMG has the location service disabled (in Prefs System). This is normally decided when you install manually the system. I fix it by commands in a firstboot.sh : defaults write /private/var/db/locationd/Library/Preferences/ByHost/com.apple.locationd.$MAC_UUID LocationServicesEnabled -bool true defaults write /private/var/db/locationd/Library/Preferences/ByHost/com.apple.locationd.notbackedup.$MAC_UUID LocationServicesEnabled -bool true chown -R _locationd:_locationd /private/var/db/locationd/Library/ Is there an other way to fix it ? Christian