I'm just wondering where does the passcode stored.
I checked system setting savedata and found it. it's not encrypted like psp. wtf.
but you must type passcode once except systen setting. bit weird limitation.
Use godmode9 and go to sysnand/data/unique id/sysdata/
00020200 for jpn
00020210 for usa
00020220 for euro
https://3dbrew.org/wiki/System_SaveData
Open 00000000 file with hexview then go to offset 000060FC. then you can see some secret.
How to check your 3ds passcode.
I checked system setting savedata and found it. it's not encrypted like psp. wtf.
but you must type passcode once except systen setting. bit weird limitation.
Use godmode9 and go to sysnand/data/unique id/sysdata/
00020200 for jpn
00020210 for usa
00020220 for euro
https://3dbrew.org/wiki/System_SaveData
Open 00000000 file with hexview then go to offset 000060FC. then you can see some secret.
Warning: Spoilers inside!
How to check your 3ds passcode.