I just thought a way which might be not possible. Maybe change your DNS or fake the server by connecting the 3ds in your pc via the wifi and create a fake https nintendo site so it redirects the 3ds update to that site and then returns the downgrade files with the MD5 and SHA-1 checksum changed or the CIA modified so the system thinks that it is a later update and installs it(BTW I created this jff so don't take it seriously if it doesn't exist and I was kinda crazy about the fact that my 3ds couldn't be downgraded)?
Last edited by EthanAddict,