The following are known Action Replay Codes for Fire Emblem: Shadow Dragon on Nintendo DS (NDS).
Game ID: YFEE-29333951
Quick Level Up
62197504 00000000
b2197504 00000000
2000006b 00000063
d2000000 00000000
Codes for Highlighted Character
Press Select+R for Max HP
94000130 fefb0000
62197504 00000000
b2197504 00000000
2000006c 00000063
d2000000 00000000
Note: Highlight the desired character and activate by pushing Select+R
Press Select+L for Low HP
94000130 fdfb0000
62197504 00000000
b2197504 00000000
2000006c 00000001
d2000000 00000000
Note: Highlight the desired character and activate by pushing Select+L
Game ID: YFEE-29333951
Quick Level Up
62197504 00000000
b2197504 00000000
2000006b 00000063
d2000000 00000000
Codes for Highlighted Character
Press Select+R for Max HP
94000130 fefb0000
62197504 00000000
b2197504 00000000
2000006c 00000063
d2000000 00000000
Note: Highlight the desired character and activate by pushing Select+R
Press Select+L for Low HP
94000130 fdfb0000
62197504 00000000
b2197504 00000000
2000006c 00000001
d2000000 00000000
Note: Highlight the desired character and activate by pushing Select+L