(1) One way is to make clone of microSD card (please see above post of @jaymot).
(2) Another way is to copy-paste from current installation all your config in a text editor (like notepad) on your PC, then using a spare microSD card, write latest OS image (Raspian or Piaware, or Pi24) and install latest versions of all feeders. Please see following guide:
Re-imaging Made Easy