To be honest, I was trying to create a "60 FPS cap unlocked" cheat code for this one because the game runs at 30 FPS when gameplay, and 60 FPS on Menu (the press triangle button in-game). So I decided to do some search;
1.) When on Menu (60FPS), search for Hex 00000001 32-bit.
2.) When In Gameplay (30 FPS), search for Hex 00000002 32-bit
3.) The first code from the results maybe the right one.
Now, if your trying to do this for other games and found no results. Try;
1.) When on 30 or 60 FPS area, do "Unknown Search"
2.) If from 30 FPS area, go to 60 FPS area and search '<' (Decreased, Less than).
3.) If from 60 FPS area, go to 30 FPS area and search '>' (Increased, Greater Than)
4.) Keep doing step 2-3 until there's only few results left and try testing them each one.
Note: not all games has a 60 FPS area like on Final Fantasy X for example.
And BTW I'm a 3DS 60 FPS cheat Fan
;
https://gbatemp.net/threads/60-fps-patches-cheat-codes-releases-and-discussion.550527/