Keep in mind that I ported version one to the 3DS, and V1 for Wii U and 3DS can be found on the downloads page. I'm not posting a direct link
because I'm lazy because v2 is coming out.
Old 3DS XL info:
I used to have a 3DSafe A9LH V11.3.0-36U with Luma in my CTRNAND. Since ReiNAND Reibooted and Re-Reileased, I "switch"ed back.
Right now, I have boot9strap with Luma 8.0 as my CFW. Though, I'd like to see other CFW's for B9S.