As we know that yesterday the 3ds firmware has been updated to V7.2.0-17, check the post here: http://www.wiihacks.com/ds-dsl-dsi-3...cart-safe.html this is just an update of the news that i have confirmed most flashcarts can still work on the new 3ds firmware.
r4i gold 3ds
r4i sdhc dual core
r4i gold pro
As long as your card can work on the last firmware, it should be also working on this V7.2.0-17. Feel free to update it.
Do yourself a favor, don't buy crappy flashcarts.