Right now, there are not many pros by updating and it's better always to be in a version as low as possible.
If I were you, I would stay on that version and access homebrew using soundhax.
If you want cfw (luma) you'll need to hardmod or another 3ds already CFW'd, or even downgrade with your 3ds alone if by chance, you have one of the "four forbidden dsiwares" already purchased
Oh... shoot... I've updated while trying to run the soundhax... BUT it went "only" to 11.1.0-34... So I think I lucked out.
Homebrew launched now.
Oh, and I happen to have 4 swords... Who the heck didn't downloaded that?! Oh, well...
Thanks for the tip to use the soundhax