Thanks a lot
GreenBay42.
It is away from the DUSA FTP server
@FurryNutz: It is not an issue because of the used web browser.
Yes, the facrory reset after the firmware upgrade.
A firmware downgrade from 6.13EU is not possible because a login onto the GUI is not possible anymore.
I was already in contact with our team in Taiwan.
Best regards,
Ioannis from D-Link Germany.