So there's this guy Hyoretsu who claims he has a working a working safehax for 11.2 (yes, which needs an exploit to be run) and that it has fasthax included (which was removed from safehax). He also claims there's "this guy" who ran the fasthax from his zip and it worked on the 40th of tries. Also (he claims), he managed to downgrade two 2DS-es from 11.2. While I'm sure exploits are unstable, and probably, even that instable before an approach to final release, the truth is, right now, this minute, THERE IS NOT FASTHAX for 11.2 except the alpha version for N3DS. So just wait for the next release. Don't waste your time.