Hello,
I know that it was my fault, to not download the latest backups, before my memory card decided to give up.
But now, as I am doing all those configuration again that I made over the last year (because, the last downloaded backup from October seems to be faulty too), I wonder if it would be a nice idea, to store the backup on an external (My)SQL-server, where I have enough disk space and the database is currently used for events only.