Bernardo Giordano offers version 3.6.0 of " Checkpoint ", excellent backup manager for nintendo 2DS / 3DS.

3DS: What's new

Added: a check for * Checkpoint loading without CFW.
Fixed: buttons are now responsive as before while navigating the UI.
Fixed: Extdata is now properly restored even when files change size.

https://github.com/BernardoGiordano/Checkpoint