To been one busy day first with the Memchunkhax3 ( the Arm11 kernel exploit I talked about earlier ) and now using the Memchunkhax3 exploit you are able to downgrade your old or new 3DS on 10.4, 10.5, or 10.6 FW.
You’re going to need one of the following to enter HBL:
- Browserhax (You can NOT use this on 10.6)
- Menuhax (You can NOT use this on 10.6)
- OOT3Dhax
- Ninjahax (Cubic Ninja)
- Smashhax (N3DS Only)
Memchunkhax3 ( The Arm11 kernel exploit I talked about earlier ) makes it possible to downgrade NATIVE_FIRM 10.4, 10.5, or 10.6 to downgrade on BOTH OLD AND NEW 3DS, but some report for the N3DS it does not work yet! (Work-In-Progress/Experimental Stages). (Try at your own Risks)
We here at Hackinformer are not responsible for any damages that may happen to your 3DS,
This could brick your 3DS, so proceed at your own risks.
Go here to get the steps and files to downgrade your 3DS: Downgrade guide for 10.4, 10.5, 10.6
So far it seems to be confirmed working by a some users. (Reddit)