[nhedgehog]

Mmmh thats a Damocles sword hanging over us waiting for the firmware update for our other pocketbook devices. Glad that there is allways the forced update option to go back in firmware.
I had a look into the db file michailbachtin provided. There is no image in it and the entries seem to link to some file in the system. Thats why I doubted that the annotation are only written into this db. But you certainly could prove more infos by opening an ebook, making some text annotations and some scribble ones, document what you have done and where and provide the db. Also there are some filemanagers that let you search for files changed on a specific date. With that all the files on the internal memory that are changed by the annotation could be found.