Just for the record, yesterday I did a complete restore from a ~1GB of rootfs+optfs backup and it worked perfectly.

But. When I started using BackupMenu I sometimes got confused by the "error" messages in the dialog. in many dialogs and was thinking if I did something wrong in the operations, particularly because I didn't see the details of the "errors". For instance when restore is complete, above the line "press any key to continue" I see something like "Error returned: 2". IF I was too panic to proceed I MIGHT have press hold and then ...
Similar things happen in fsck. There seem to be "errors" even if the checking goes through, like "errors may have been encountered..."
Also I wonder if it would help to put a list of available commands in the console. I still don't know what the terminal mode can do especially because of missing "/" (symbols input seem not working?).(edit: sorry I was talking about older versions. the current one doesn't have the terminal mode)
Maybe it's only me?
Overall I feel very happy with BackupMenu and I am thankful to the dev for making this which should have been provided by Nokia.