I wrote them with a rather simple question. It was my first email to them. I wanted the 'old' software back beacuse the new one is draining my battery rather quick. I got a response in 29 minutes with the link to the firmware. So they read email and they do react
BTW if you downgrade your Cybook to build 538 you loose all books and fonts on your reader.
It was mentioned in the email, but of course I did skip that part
