If you have a hacked 3ds/2ds then leave well alone, heres a new update:
Just when you think the 3DS just can't possibly get more stable, Nintendo is there to remind us. A new system update 11.7.0-40 was pushed out to consoles on June 18. The age-old quote straight from Nintendo detailing the changes made is below. Of course, with the 3DS still getting official games and support from Nintendo, it's very likely we'll continue seeing software updates for a while yet, even if they're sporadic.
Further improvements to overall system stability and other minor adjustments have been made to enhance the user experience