I bought my Kobo few weeks ago. Running firmware 1.4. Every time I’m done with my reading I would power it off. After powering It on it would normally open on the page I finished. Great. ..Sometimes however looses its bookmark and opens on the very first page of the chapter I was reading. No way to get back to the last page unless you remember the number and start flipping pages. I’m new to Kobo and understand, there is no way to go straight to the page you want(eg page 57 in particular chapter).