From what I've seen, if you close the device while reading a book, you get to the folder where that book is, and the cursor is indeed over that book. So, the answer is a "yes". However, you can additionally configure it so that you can directly load the last page you were reading before shutting off the device.
What I said of the main menu is meant for when, for example, you go to the main menu to change some adjustment like the language of the keyboard or something like that, then you don't need to go back to the folder, but the file is just in the main menu, waiting for you to reopen it.
The Spanish firmware translation is in
this thread. I've erased every other file as not to confuse myself or any potential downloader. I'm sorry to have put it in the german forum, but it's the one which has a dedicated thread
.