Basically, the functionality disables writes to the database if the firmware version is not supported. You can choose to override that but I cannot know the affect until I review the database version.
At the moment I have not had the time to make the necessary changes to support the current database version. I do know for instance that deleting a book that is on a shelf from the device using Calibre will not do everything that is necessary because the book is downloaded again on the next sync.
I would also like shelves to be supported but have not had the motivation to do the work yet. I will likely get to it but probably not in the next few weeks.
Transferring epubs to the device is really just a copy of the file onto the device. When the device is disconnected it see the changes and updates its database.
Basically, the functionality disables writes to the database if the firmware version is not supported. You can choose to override that but I cannot know the affect until I review the database version.
At the moment I have not had the time to make the necessary changes to support the current database version. I do know for instance that deleting a book that is on a shelf from the device using Calibre will not do everything that is necessary because the book is downloaded again on the next sync.
I would also like shelves to be supported but have not had the motivation to do the work yet. I will likely get to it but probably not in the next few weeks.
Transferring epubs to the device is really just a copy of the file onto the device. When the device is disconnected it see the changes and updates its database.
Tim