Sony DPT-RP1 unable to update firmware

Hi,

i'm using the RP1 since last year and a view weeks ago i got an email from Sony support regarding the new firmware update for the RP1.

Since a few weeks i tried to update but every time i try starting the update via Digital Paper App, i got the following error:

"Update cannot be confirmed.
Wait a while and try again.

Error code 12-1FF0-0197"

What can i do? The latest version of the Digital paper app is installed.
Maybe it's an issue where i live(Germany). Or a windows problem?

I should be pleased receiving any information which pushes me further.

Thanks in advance.

cua
michael