OMG.... One of these threads.... (even though I did the same before, I've realised my mistake). Why doesn't OP wait till the 3DS EoL? 'Cause an Arm9 Exploit will be released by then, and that's because Nintendo wouldn't bother to fix up things about 3DS Hacking after 3DS reaches EoL.
See, I'm stuck on 11.0.0-33 too... Just wait.... It's a matter of time... Arm9 will be exploited! I'm waiting tooo!!! It will definetly be released SOON™!!!
And PERSONALLY, Nintendo is improving in Security and I must admit, the 3DS is a really well-secured system, which is almost impossible to hack. Nintendo can fix downgrading through Hardmod / DSiWareHax easily: all they need to do is put a checklist in the Arm9 so that any NATIVE_FIRM with a FW Version less than 11.X.0-XX will be rejected by Arm9 and system won't boot. We're just lucky they didn't do that... They might do it by the time 3DS reaches EoL. And then, we'd be dead... NO PIRACY. They can even prevent Arm11 Userland access in the future by only allowing certain SIGNED Apps to access it, not unsigned Homebrew content... You see, Nintendo can LITERALLY DO ANYTHING, and 11.0 is just the beginning - watch as the entire 11.x line screws up Homebrew and causes a major 'QUAKE in 3DS Hacking and PIRACY. If they patch the Arm9 so that Gamecard launcher cannot unsigned games, even Flashcards MAY be BLOCKED PERMANENTLY!!! Only legit 3DS ROMs would POSSIBLY be able to be run, but even that can be patched if they MAYBE do somthin' with the Arm9...
So if you see, 11.0 can be downgraded, and the exploit will be released in future. Just think you're blessed that Nintendo didn't do all that stuff with the Arm9 which would make Hacking IMPOSSIBLE!
In conclusion, any 3DS Modding / Hacking can be completely ruined by patching the Arm9. It's like taking over the brain (Arm9) of the 3DS if you want to hack it. And if Nintendo make it impossible to get into the BRAIN, the HACKING is IMPOSSIBLE!!!
Correct me, Advanced 3DS Hackers, if any of the content I posted in this reply is wrong, 'cause I want to know more stuff 'bout this (3DS Hacking) too!