Bookmark storage file location.

Hello,

I bought a Onyx Boox M96 more than a year ago. I have updated the software from time to time downloading it from eReader Store’s webpage.

Updates added many improvements to the ebook, but sometimes after the process I lost bookmarks I inserted before in documents (mainly pdfs, but also in epubs), and also the current page which I was reading before applying the update.

I would like to know if there is a way to make an external backup of bookmarks and current pages. Where are these data stored? Are those files accesible for the user, so we can copy them?

I tried to look for this in goggle and this forum with no luck...

Thank you in advance