If you can read German, try this link:
http://papierlos-lesen.de/neue-versi...er-pocketbook/
For the latest version go to the Russian forum on the-ebook.org: the first post
here has two links. Use the link with PB Pro in its name.
There is also a wiki here on MobileRead, (
https://wiki.mobileread.com/wiki/Cool...for_PocketBook) but that is rather outdated.