Frankly, with all the backups and restores, I could have inadvertantly reverted to 26 from 26-2 by mistake. Don't think so, but it's possible. Questions:

a) The version from -devel is 26-2?
b) If I need to revert to 22 from 26, do I need to go through the whole procedure in post 1, or can I simply unpack the tar and maybe CHMOD?
c) Would it make sense to back up to a folder on SD, say /media/mmc1/BackupMenu or similar? Right now all the .tar files are listed and I can't use folders to archive old backups.
d) Would it be possible, if renaming isn't available, to only list *root*.tar when restoring root and so on? It seems too easy to restore an opt to a root or the other way around. Never tried, though.