Yep for those of you that have a hardmod and want to downgrade their 11.0 3DS and being stuck with either OSX or Linux developer dx3m has come to rescue and brought you guys an autofirm patcher for both OSX and Linux. If you don’t know what autofirm patcher is you can read about the whole procedure here.
You want to downgrade your 3DS 11.0.0-33 but you have no Windows only OSX?https://t.co/4ujfPHfxxU
This is a NATIVE-FIRM Downgrader for OSX.— dx3m (@dx4m) July 8, 2016
And here is the Linux equivalent. https://t.co/lda0vDZP7S
Instructions will follow. To downgrade your 3DS NATIVE-FIRM.— dx3m (@dx4m) July 9, 2016
Download links: OSX Version, Linux Version
Thanks to dx3m for porting this tonOSX and Linux ^^
Source: dx3m