Press Start
62111880 00000000
b2111880 00000000
10049e60 000003e7
10049e64 000003e7
10049fe0 000003e7
10049fe4 000003e7
d2000000 00000000
94000130 FCFF0000
62111880 00000000
B2111880 00000000
20009E4C 00000003
10009E50 00000218
D2000000 00000000
Press L+R to activate the code before you go into the Pokemart and go collect your Manaphy Egg from the delivery guy.
It takes around 3000 steps to hatch the Egg
94000130 FCFF0000
62111880 00000000
B2111880 00000000
2000A054 00000007
D2000000 00000000