Hi Uwe. You need a turf file from Flex. You need to raise a ticket with them and ask for a file for Germany. They will need your callsign and the serial no of the 5000a, this is on the back panel and also your database. Do this by Opening PowerSDR Setup and export your database. Then attach that database to the Support request ticket. I think that covers it. If I've forgotten anything I am sure they will tell you.
This is the link, https://helpdesk.flexradio.com/hc/en-us/ Click on the first item under announcements, set up a ticket. You will receive a zip file. Follow the instructions carefully and all should be ok. Look forward to talking on 60. 73 Geoff G4XMJ