Some stages are not working in Brawl

[devinwifi]

Delfino plaza
Shadow moses
and Mario kart circuit freezes the whole game when i select them, any way to fix it? Someone said to use this code :
4A000000 9017EC1C
14000000 00002720
14000004 00000232
14000008 0000271A
1400000C 00000232
14000010 0000271B
14000014 00000232
14000018 00002721
1400001C 002D0232
14000020 00002722
14000024 00AE0232
E0000000 80008000
but i don't know how.