The "RDD-005" model is no longer supported by "Defender" company. Database updates can be downloaded through the "Speedcam.online" service:
https://speedcam.online/radar-detektor-defender-rdd-005/
Database updating manual:
http://defender.ru/links/files/879
Update utility for radar detector (Windows 7 or higher):
http://defender.ru/links/files/878
Driver for radar detector (Windows 8 x64 or higher):