Okay, I finally found it out:
The default Vendor ID and Product ID is not correct (Western Digital???).
I am not sure it’s intentionally bad (and also, Product ID 0a10 doesn’t exist for Western Digital, check it out manually from the linked table later).
With the firmware upgrade under Windows you rewrite them (product and vendor ID), but the in the loaded .ini file the Product ID is still incorrect (0561).
The correct is: 1561
Source: http://www.linux-usb.org/usb.ids
Finally, the correct Vendor & Product ID: 152d:1561