Depends. In which levels/with which characters doesn't it work?
EDIT:
Thanks for your feedback, I had a look at it and found the problem. Try this code:
::Always Three Challenge Sigils
:::Doesn't work for all Challenges, for time-based Challenges use Time Never Increase, for money-based Challenges use multipliers
5206CD58 E7830101
0206CD58 E1A00000
D2000000 00000000
No, the point was that it was essentially a broken code and that it would only work on the emulator because the emulator's AR system is a little more flexible than a real AR. Normal AR codes will always work on both emulators and flashcards/Action Replays.
The codes I posted should technically work on the DS. I have no clue why they don't, however. For me, they freeze the game on a DS, but they work on an emulator O_o
050429FC 011A0002? That's never going to work. You would be writing to the palette area of the RAM!
As I said in my GBAtemp post, you currently can't add functional party members with the values and addresses I posted. Even if you do succeed in adding one, it would have no AI data and be completely useless.
Roxas moves the Scythe just like Marluxia (Select)
94000130 FFFB0000
220B2D3F 0000006D
220B2D40 00000061
120B2D26 0000616D
D2000000 00000000
Then press Select in the menu, for example when you're selecting a Holo-Mission or changing your panels. If that doesn't work try holding the button when the mission is loading.
Weaponset Modifier works fine for me on Story Mode. Tested Roxas with Sora's weapons, in the Twilight Town mission on Day 194~, using an AceKard 2i with AKAIO. No joker/activator/whatever you like to call it. Works fine on Mission Mode as well (same mission).
The reason it doesn't work on an R4 is because you're trying to do a 16-bit write on an address ending with F, which is normally not possible. The emulator accepts it, but a real AR won't. Try splitting the first line in two, as such:
However, some are a bit outdated when compared to the (U) cheats (for example, (E) All Skills doesn't give Treasure Magnet or Auto-Lock while the new (U) version does).