Thank you for your replies! I'm going to try to disable the automatic shut down and see how it behaves
Do you know if it is actually possible, maybe from the eReader.config file, to set the automatic shutdown to a few days? I know the setting is made there, but is it safe to try to put there any value, such as the number of minutes in a day and a half? I don't know if it only accepts given values or if it recognises any number...