Hm... I'd probably better add a way to copy the fsckstatus file to your eMMC in case you want to look at it... I assume it's working -correctly-, but I don't know what the output means from your description.
Also, as I said before, you do have bad blocks. It's inevitable. The -filesystem- marks them as bad; this means that if you re-flash, the new FS has to re-mark them.
Solution: USE THIS VERSION OF BACKUPMENU. Not the one available in the repositories.