I still have that weird battery drain with 3.0.3.9 and bluetooth / wifi, even on a freshly flashed SFOS (soft-bricked the device on a downgrade attempt). So I guess there is nothing I can do than staying on 3.0.2 for the moment. I'll try again once all apps are adapted to 3.0.3, but will probably have to wait until Jolla finds and fixes the issue. They are tracking my TJC thread, so lets hope that will be soon