Sadly backup and restore is completely broken for me. I had an old backup from april as .vault and copying it over to C worked as expected. But the ui feature is not working at all. First i tried to "Updated Backup". A nice looking Circle spin shows it is working through contacts, apps and so on, but ends with an error it could not write or something. But it created a 320Mb Backup tar file on the Btrfs SD nevertheless, so i copied this file to a new ext4 sd and plugged into C. Restore did not work from this file as expected, an error was thrown. Now i tried to backup from 2.0.2.45 Tablet to ext4 SD. Error. I ended up reformating the SD in different machines and tried again, no luck. Also i could not update the local backup in .vault. The ui always cried for an SD to be present to backup to. I have not tried FAT SD, should i?